Dissertations / Theses: 'CATIA'

1

Holm, Anders, and Magnus Tilly. "CATIA V5 SOM KONCEPTGENERERINGSVERKTYG." Thesis, Halmstad University, School of Business and Engineering (SET), 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-771.

Full text

Abstract:

Att ta fram en ny bilmodell är ett tidskrävande och omfattande arbete där många olika kunskapsområden måste samspela. En del i utvecklingsprocessen som får allt större betydelse är designarbetet. Om bilens utförande och design inte tilltalar konsumenterna innebär detta låga försäljningssiffror och därmed förlorade intäkter för företaget.

Det huvudsakliga syftet med detta arbete är att grundligt undersöka om och hur CAD-programmet Catia V5 med modulen Imagine & Shape (IMA) skulle kunna användas på Volvo Car Corporations designavdelning (PVS). Syftet är också att granska vad en implementering av Catia V5 med IMA-modulen skulle innebära för produktutvecklingsprocessen, samt att undersöka vilka som skulle kunna använda sig av programmet.

För att undersöka hur Catia V5:s IMA-modul skulle kunna fungera på PVS har vi i samarbete med designstuderande Pontus Ny modellerat en konceptbil, komplett med exteriör, instrumentpanel, mittkonsol, ratt, stolar, baksäte, fälgar och hjul. Vi har även modellerat en växelspak och en backspegel som först har tagits fram i Alias, vilket har möjliggjort en jämförelse mellan Alias och Catia V5:s IMA-modul. Modellerna har sedan utvärderats genom enkäter med uppföljande intervjuer. Urvalsguppen utgörs av ett antal anställda hos PVS som har haft möjlighet att sätta sig in i IMA-modulen.

Respondenterna uppgav fördelar som anmärkningsvärd snabbhet vid framtagning av 3D-modeller i de fall där ytan inte behöver vara perfekt. Dock krävs stor erfarenhet för att skapa en bra renhet och ytjämnhet vid stora ytor. Samtliga involverade i detta projekt anser också att Catia V5 med IMA-modulen skulle kunna fungera som ett konceptgenereringsverktyg i ett tidigt skede. Att använda IMA-modulen i den första förberedande fasen skulle enligt vår mening innebära tidsbesparingar, eftersom användaren snabbt kan genomföra förändringar på en modell redan på möten. I dagsläget måste en Alias-modellör samla in alla ändringar, genomföra dessa snabbast möjligt och därefter bestämma en tid för ett nytt möte då alla inblandade kan närvara, vilket sällan är enkelt.

IMA-modulen skulle även kunna vara ett bra hjälpmedel för en designer, som själv kan modellera sina idéer och därigenom lättare åskådliggöra och diskutera sitt koncept vid möten. I många fall är det enklare att förstå en 3D-modell som man kan vrida och vända på, än en ritning på ett papper. Utifrån IMA-modellen skulle det vara möjligt att fräsa ut en lermodell, vilken kan finjusteras och sedan åter scannas in och bearbetas vidare i Alias.

APA, Harvard, Vancouver, ISO, and other styles

2

Christiansson, Eric, and David Moretti. "Kinematics methodology and simulation in Catia v5." Thesis, Högskolan i Halmstad, Sektionen för ekonomi och teknik (SET), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-22539.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Andersson, Erik, and Sam Bäckman. "CAD-SYSTEM COMPARISON : CATIA V5 AND ZW3D 2011." Thesis, Högskolan i Halmstad, Sektionen för ekonomi och teknik (SET), 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-15716.

Full text

Abstract:

ZW3D 2011 is a very young CAD-system that Pär Nobring at r.a.p.s asked us to put againstone of the world leading CAD-systems today, Catia V5. Since we are going through aneducation that centers round engineering and technical facts, this comparison had to be in tunewith that.After discussion with both Pär Nobring, and our mentor Johan Wretborn, we came to anunderstanding regarding what should be done. We performed a technical comparison of thefollowing main features:· KBE tools (Knowledge Based Engineering)· Curvature and Continuity Analysis· File Format Translation Verification· NC MachiningWe are very happy with all our result, if you don't count the failure with the NC machiningsection. However none of the tests we did turned out unnecessary. It lead to a greaterunderstanding than we already had, and gave us very useful experience.

APA, Harvard, Vancouver, ISO, and other styles

4

Berg, Joakim, and Per Øyvind Skog. "Mobil Bastu." Thesis, Högskolan i Halmstad, Sektionen för ekonomi och teknik (SET), 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-17859.

Full text

Abstract:

This thesis is an addition to pictures and animation that has been developed using CATIA V5. The animation and the images are a market basis to test whether the product is of interest in the Nordic market. The thesis is structured with elements of the Fredy Olsson method. In this thesis there is also a short presentation of the company Tylö AB, which been chosen to market test the product. A product definition with the sub-headings; “Description and use of product”, “Environmentand users”, “Economy” and “Product inquiry”, are the basis for the product. A list of criteria with conditions and requirements is established. These criteria are then weighted in a matrix. Product ideas are evaluated using the matrix. After defining the criteria and evaluation, a profile is created with a track where woodenpanels and insulation can be fixed upon. This is followed by a design specification which explains details of every component in the product. With this description belongs a matrix in which the product components are classified as finished and special units and also if these require routine or special treatment. Execution of rendering and animation are explained and results are shown with rendered images. The report concludes with a brief conclusion, critical review and suggestions for further work.

APA, Harvard, Vancouver, ISO, and other styles

5

Lindhe, Alexander, and Julia Szalontai. "3D visualization of dynamic drive test data." Thesis, KTH, Maskinkonstruktion (Inst.), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-176263.

Full text

Abstract:

The modular product system of Scania CV AB provides the possibility of complete truck customization while using a limited number of interchangeable components. The high product modularity sets high demands on quality assurance of the delivered products. Geometry and layout assurance is a key factor of the quality control. Dynamic geometry assurance of trucks is accomplished by performing physical tests while measuring the movement of certain components. The results are then analysed in order to ensure that unwanted collisions does not occur during the operation of the vehicle. Test results are presented in test reports containing 2D plots of delta movements that occur at certain measurement points. Test reports are considered difficult to interpret and design mistakes have occurred due to misinterpretations. The purpose of the master thesis was to develop a 3D visualization method that can complement test reports and facilitate the understanding of test results. In this master thesis, several visualization methods were identified. The identified visualization methods were evaluated according to requirements derived from interviews held at Scania. One method was then chosen for further development. The thesis project focused on cabin movement visualization. However, the aim of the development was to create a general method that is applicable for all main components, e.g. chassis and engine. The result of the development was a visualization method including a MATLAB script and a CATIA macro. The MATLAB script filters raw test data for extreme positions of the cabin. These positions are then recalculated as transformation matrices and exported as an Excel sheet. The Excel sheet is further imported by the CATIA macro, which instantiates and positions user selected components into the previously found extreme position. The developed visualization method was then verified and confirmed of providing reliable results. Furthermore, benefits and drawbacks of the visualization method are discussed. The developed visualization method is then evaluated by the previous set requirements, showing that these are fulfilled. Even though more verification of the visualization method is suggested, it is concluded that the method can and should be implemented into the current workflow.
Scania CV AB’s modulära produktsystem medför möjligheten till komplett lastbilsanpassning samtidigt som endast ett begränsat antal utbytbara komponenter används. Den höga produktmodulariteten ställer höga krav på kvalitetssäkring av de levererade produkterna. Geometri och layoutsäkring är en nyckelfaktor inom säkerhetställandet av kvaliteten. Dynamisk geometrisäkran av lastbilar utförs genom att mäta rörelser av vissa komponenter under fysiska provningar. Resultaten analyseras sedan för att säkerställa att inga oönskande kollisioner inträffar under drift av fordonet. Provresultaten presenteras i provningsrapporter i form av 2D-plottar visande deltarörelser som inträffat vid specifika mätpunkter. Provningsrapporter anses vara svårtolkade och konstruktionsmisstag har inträffat på grund av feltolkningar av dessa. Syftet med examensarbetet var att utveckla en 3D-visualiseringsmetod som kan komplettera provningsrapporter och underlätta förståelsen av provresultaten. I detta examensarbete har flera visualiseringsmetoder identifierats. De identifierade visualiseringsmetoderna utvärderades sedan enligt krav härledda från intervjuer som hölls på Scania. En metod valdes därefter för vidare utveckling. Examensarbetet inriktades mot visualisering av hyttrörelser. Målet med utvecklingen var dock att skapa en generell metod för rörelser av alla huvudkomponenter, som till exempel axlar och motor. Resultatet av utvecklingen var en visualiseringsmetod som inkluderade ett MATLAB-script samt ett CATIA-makro. MATLAB-scriptet filtrerar råtestdata för extrema positioner av hytten. Dessa positioner räknas sedan om som transformationsmatriser och exporteras til ett Excel-ark. Excel-arket importeras sedan av CATIA-makrot till CATIA, som instansierar och positionerar användarvalda komponenter i de tidigare hittade extrempositionerna. Den utvecklade visualiseringsmetoden verifieras sedan och det bekräftas att tillförlitliga resultat fås fram. Dessutom diskuteras fördelarna och nackdelarna med visualiseringmetoden. Den utvecklade visualiseringsmetoden utvärderas sedan med de tidigare ställda kraven. Utvärderingen visar att dessa uppfylls. Även om ytterligare verifiering av visualiseringsmetoden föreslås, dras slutsatsen att metoden kan och bör implementeras i det aktuella arbetsflödet.

APA, Harvard, Vancouver, ISO, and other styles

6

Hörner, Jörg. "Modifikation von Freiformflächen unter Randbedingungen auf der Basis unregelmäßig über den Flächenbereich verteilter Meßpunkte." [S.l.] : Universität Stuttgart , Fakultät Mathematik, 1995. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB6783404.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Singh, Aakash Narender, and Vijay Govindharajan. "Automated generic parameterized design of aircraft fairing and windshield." Thesis, Linköpings universitet, Fluida och mekatroniska system, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-75858.

Full text

Abstract:

The process of design is time consuming and result oriented. There is always a better scope for any design that reduces the time with better precision. Considering this as a major factor during design process, two of the vital parts of the aircraft conceptual design are taken into account where a lot of time can be saved. Major components considered in this work are fairings for the lift generating surfaces and cockpit windshield. In this work the major inference is to reduce the time spent on the initial conceptual design. The two components designed in this work are fairings and windshield. The fairing design in this work provides a flexible template which can be used for various fuselage and wing configurations for transport aircrafts. The windshield is classified into two types in this work, flat and blend windshield. Both the type of windshields can be implemented on appropriate fuselage. Both the components are designed to be implemented in single pilot as well as double pilot aircrafts. They also have parameters which can be modified according to the user requirement. The changes in the parameters provide the change in shape, size and volume of the components. The software used for this is CATIA V5. The process is carried out using two automation methods available in CATIA namely Power-Copy and Knowledge pattern. A comparison between the effectiveness of two automation methods used in this work is performed.

APA, Harvard, Vancouver, ISO, and other styles

8

Jonas, Lundin, and Sköldebrand Mats. "KBE I PRODUKTUTVECKLING PÅ SCANIA : En undersökning av potentialen i CATIA Knowledgeware." Thesis, KTH, Maskinkonstruktion (Inst.), 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-100191.

Full text

Abstract:

Övergången från CATIA V4 till CATIA V5 innebär nya möjligheter för konstruktörerna på Scania att arbeta med Knowledge Based Engineering, KBE, för att effektivisera och kvalitets-säkra sitt arbete. Då CATIA V5 är en ny plattform som innehåller verktyg med samlingsnamnet knowledgware, för att bygga in kunskap i modeller ville Scania undersöka potentialen i att arbeta med KBE, och hur detta skulle kunna ske på Scania. Vid traditionell produktutveckling tas en helt ny artikel fram vid behov och ofta innebär detta att arbete som tidigare utförts, görs om igen. Syftet med arbetet är därför att undersöka huruvida KBE i CATIA V5 kan erbjuda möjligheter att återanvända kunskap från tidigare arbete och samtidigt kvalitetssäkra denna, samt utreda vilka knowledgewarelicenser som i så fall kan vara lämpliga för Scania. För att göra detta har en litteraturstudie genomförts för att undersöka vad som har gjorts inom området, och även en intervjustudie har utförts inom R&D på Scania. Vidare har sakkunniga på Linköpings Universitet och Tekniska Högskolan i Jönköping intervjuats. Detta material har sedan sammanställts och analyserats för att sedan resultera i slutsats och rekommendationer. Arbetet har resulterat i en demonstrationsmodell för Scania internt, som baserar sig på den information som framkommit under litteraturstudier och intervjuer. Att arbeta med KBE har både fördelar och nackdelar där den största svårigheten ligger i att bedöma om en artikel lämpar sig för KBE-modellering. Vinsterna med KBE är att stora tidsvinster kan göras och kvalitet kan säkerställas. De mest användbara licenserna för Scanias vidkommande är KWA och PKT, med vilka exempelvis kontroller av standarder och återanvändning av geometrier kan göras. Den slutliga rekommendationen baserat på teori och resultat är att Scania bör överväga att införa KBE som arbetssätt, och därför tillsätta en grupp som fungerar som expertis inom KBE. Denna bör då fungera som support och en resurs vid skapande av KBE-modeller och ansvara för att dessa är korrekta och underhålls. Vidare bör arbete med att definiera fysiska gränssnitt mellan artiklar startas och lämpligtvis då av GEO- eller Layoutgrupperna.
The transition from CATIA V4 to CATIA V5 opens up new possibilities for designers at Scania to work with Knowledge Based Engineering, KBE, in order to increase efficiency and assure quality. As CATIA V5 is a new platform complete with tools, referred to as knowledgeware, for infusing knowledge into models, Scania wanted to investigate the potential of working with KBE, and how this could be used at Scania. In traditional product development a completely new model is produced when needed, and this often entails performing tasks already undertaken and completed. Therefore, the purpose of this thesis is to ascertain whether or not KBE in CATIA V5 can offer the possibility to reuse knowledge from previous work and assuring the quality of this, and if so, determine which knowledgeware licenses would be appropriate for Scania. In order to do this, a literature study was conducted in order to look into what had been done in this field. Also, an interview study was carried out within Scanias R&D department. In addition to this, interviews were held with expertise at Linköping University and Jönköping University. The material was then compiled and analyzed, resulting in conclusions and recommendations. The thesis resulted in a demonstration model for Scania internally, based on the information gathered from literature and interviews. Working with KBE has its pros and cons, the biggest difficulty being to determine whether or not an article is suitable for KBE-modelling. The profits of KBE include quality assurance and sizeable reductions in design time. The most useful knowledgeware licenses for Scania are KWA and PKT, which for example enables users to implement checks for standards and to easily reuse geometry. The final recommendations of this thesis, based on theory and results, is that Scania should consider introducing KBE, and should therefore appoint a group to function as an authority on KBE. This group would provide support and act as a resource in the creation of KBE-models, and also be responsible for the validity and maintenance on these. Furthermore work should begin with defining physical interfaces between articles, preferably by GEO- and Layout groups.

APA, Harvard, Vancouver, ISO, and other styles

9

Ivanov, Dinko. "Gearbox housing design – topology optimization through generative design." Thesis, KTH, Maskinkonstruktion (Avd.), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-244983.

Full text

Abstract:

Detta examensarbete använder ett systematiskt tillvägagångssätt för att omkonstruera ett växellådshus till ett elektriskt fordon med avsikt att förbättra prestanda med avseende på hållfasthet, livslängd och styvhet. I examensarbetet ges även en kort beskrivning av hur växellådan fungerar, vilken roll den spelar i de elektriska fordonen, samt grundläggande teori som används vid konstruktion av liknande växellådor. Den huvudsakliga arbetsmetoden som använts för att nå målen är topologioptimering och olika lösningar har simulerats för att förenkla den framtida omkonstruktionen. Analyser av de olika resultaten har lett fram till ett grovt förslag på hur växellådshuset kan utformas. Det resultatet förkastades efter det att några extra simuleringar gjorts. Även om inget slutgiltigt förslag hittades, har detta examensarbete tagit fram en bra grund och vägvisning för att senare lyckas med uppdraget.
This thesis targets a systematic approach for redesign of the gearbox housing for an electrical vehicle, with an intention to improve its performance in terms of structural integrity, durability and compliance. Throughout the work, a brief overview of gearbox purpose, position and significance in context of electric vehicles has been presented, some theoretical background concerning design of similar gearboxes is presented and underlying theoretical fundamentals are reviewed. Topology optimization has been utilized as the main method for achieving the goals and various solving runs were performed in order to ease the subsequent redesign. Interpretations of multiple result sets led to a rough outline guess of a possible solution candidate. After supplementary studies, that solution was later discarded. In the end, although no final redesign was generated, clear and comprehensive directions for achieving the targeted goal have been formulated.

APA, Harvard, Vancouver, ISO, and other styles

10

Pettersson, Carl. "Packningsstrategier för modularisering på chassi : En studie för att öka modulariseringen och flexibiliteten för packning av komponenter på Scanias lastbilschassier." Thesis, Linköpings universitet, Maskinkonstruktion, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-78919.

Full text

Abstract:

Ett av de mest komplexa gränssnittsområdena på Scanias lastbilar är gränssnittet mellan komponenter och ramsidobalkarna. Orsaken till detta är att det inte finns något standardiserat gränssnitt på hur infästningen av en rammonterad komponent ska ske, utan varje komponent har idag ett unikt gränssnitt mot ramsidobalken. Detta försvårar möjligheten till fri placering och speglingsbarhet längs ramsidobalkarna. Detta examensarbete har utförts i syfte att ta fram en beskrivning på hur en rammonterad modul bör utformas, vilka gränssnitt den ska ha mot ramen samt vilken standardiserad längdenhet den bör delas in i. Vidare har de komponenter och parametrar som påverkar chassikompositionen studerats för att få en bild över den problematik som finns när en flexibel chassikomposition ska uppnås. Examensarbetet behandlar komponenter mellan hjulhusen och de komponenter som studerats är bland annat: Trycklufttankar, SCR-tankar, ljuddämpare, tvärbalkar, bränsletankar och fjädring. Målet har varit att ge rekommendationer på hur dagens chassikomposition kan förbättras för att öka flexibiliteten och få en mer modulär produkt. Efter övergripande studier av dagens komponenter har ett koncept tagits fram på hur ett gränssnitt bör se ut för infästningen av en rammonterad komponent, var media ska dras och var fästen för påbyggnationer ska placeras. Resultatet visar att den första komponenten bör börja på ett avstånd av 675 mm från det teoretiska framaxelcentrumet i stället för de 700 mm som det är idag. Det andra främre gränssnittet bakom den andra framaxeln bör hållas kvar på 2675 mm från det teoretiska framaxelcentrumet. Utöver detta bör axelavståndsdelningen behållas tills det skapas en tydlig plan på hur utvecklingen av nya komponenter ska ske. Vidare bör det bakre gränssnittet delas in i tre steg; 705 mm, 818 mm och 905 mm.
One of the most complex areas of the interfaces at Scania is the interface between components and the side members on the truck. The reason is that there are no standardized interfaces for the attachment of a frame mounted component on the side member. Each component has its own unique interface, which makes it almost impossible to mount the components on other than standardized positions. This master thesis has been carried out to develop how a component mounted on the side member should be designed, which interfaces it should have to the side member and what standardized unit of length it should be divided into. The study also includes the components and parameters that have an effect on the composition of the chassi. The study discusses the components between the front and rear wheel housing; some of the studied components are: compressed air tanks, SCR tanks, silencer, crossmember, fuel tanks and suspensions. The goal with this master thesis is to give recommendations of how the composition of the chassi may improve to increase the flexibility and get a more modularized product. After a general study of the components of today a concept has been developed for how an interface should look like for the attachment of a component on the side member, where tubes and electric cables should be connected and where brackets for bodybuilders should be placed. The results show that the first component should start at a distance of 675 mm from frame front instead of 700 mm as it is today. The second interface behind the second front axle should be kept at 2675 mm from frame front. In additional to this the division of the axle distance should be kept as it is today until a roadmap for how the components will develop. Further, the interfaces in front of the rear axle should be divided into three steps; 705 mm, 818 mm och 905 mm.

APA, Harvard, Vancouver, ISO, and other styles

11

Al-Sabeh, Mazen. "Algorithme de comparaison de modèles géometriques en évolution : une application avec CATIA V5." Mémoire, École de technologie supérieure, 2004. http://espace.etsmtl.ca/680/1/AL%2DSABEH%2C_Mazen.pdf.

Full text

Abstract:

Les entreprises manufacturières qui développent des produits complexes (automobile, aviation), produisent et utilisent une grande quantité d'information depuis la phase de développement jusqu'à la fin du cycle de vie du produit. Ces entreprises ont été les premières à modifier leur structure et à développer de nouveaux outils pour optimiser les coûts, les délais et la qualité. Les systèmes de gestion de données techniques sont des outils très utilisés dans les entreprises pour gérer les informations relatives au produit. Cependant, ces systèmes ne permettent pas d'avoir accès à des informations internes aux documents exploitables pour les différents métiers intervenant dans le cycle de vie du produit, surtout s'il y a des modifications apportées à un produit pour en créer une version améliorée. Dans le cadre plus particulier de la conception assistée par ordinateur (CAO), il est par conséquent nécessaire de développer un outil rapide et efficace répondant à ce besoin, pour avoir des informations plus détaillées à l'intérieur d'un fichier CAO, telle que la nature des modifications apportées à un produit, les éléments modifiés et leurs valeurs. Dans ce projet, nous allons proposer un algorithme de comparaison des modèles 3D basé sur l'analyse des arbres de modélisation et sur la représentation par les caractéristiques. Cet algorithme détecte n'importe quelle modification entre deux versions différentes d'un même modèle et extrait automatiquement toutes les nuances géométriques entre elles. L'opération de comparaison est basée sur quatre critères, caractéristiques modifiées, caractéristiques ajoutées, caractéristiques supprimées et caractéristiques déplacées dans l'arbre de modélisation. Les résultats de cette comparaison sont présentés sous la forme d'un fichier texte identifiant toutes les modifications effectuées, et également sous la forme graphique. Des essais ont été réalisés avec des pièces mécaniques et aéronautiques réalisées avec le logiciel CATIA V5. Les bons résultats obtenus indiquent que notre comparateur détecte parfaitement les modifications des versions de modèles (CAO), et contrôle la structure de leurs arbres de modélisation. Cette application contribue à l'avancement de la technologie au niveau de la gestion des informations techniques du cycle de vie des produits.

APA, Harvard, Vancouver, ISO, and other styles

12

Al-Sabeh, Mazen. "Algorithme de comparaison de modèles géometriques en évolution : une application avec CATIA V5 /." Montréal : École de technologie supérieure, 2004. http://wwwlib.umi.com/cr/etsmtl/fullcit?pMQ89286.

Full text

Abstract:

Thèse (M. Ing.)--École de technologie supérieure, Montréal, 2004.
"Mémoire présenté à l'École de technologie supérieure comme exigence partielle à l'obtention de la maîtrise en génie mécanique". Bibliogr.: f. [110]-111. Également disponible en version électronique.

APA, Harvard, Vancouver, ISO, and other styles

13

Müller-Wilderink, Henrik. "Automation of Offline Programming for Assembly and Welding Processes in CATIA/DELMIA using VBA." Thesis, Linköpings universitet, Maskinkonstruktion, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-176611.

Full text

Abstract:

Programming industrial robots for welding or part manipulation tasks is a time-consuming and complicated process, resulting in companies not able to implement robot systems and exploit their advantages. To reduce the time needed for programming, research is looking into ways to automate this process and reduce manual labour.In this thesis a concept for automating the programming process of industrial robots was investigated using EXCEL VBA and CATIA/DELMIA. It was done for an industrial grating model of varying sizes and configurations, resulting in a time reduction of 99% compared to manual creation. For this, the model was first automatically created from scratch for the required configuration and afterwards a robot motion was created fully automatically. The concept and modelling approach is described, and the automation approach detailed. Finally, the results are analysed and discussed.

APA, Harvard, Vancouver, ISO, and other styles

14

Cheung, Ching Chi. "Semi-automated process planning and cost estimation of turned components based on CATIA V5 Machining." Thesis, Jönköping University, JTH, Mechanical Engineering, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-1304.

Full text

Abstract:

To be more competitive in the market, many companies are trying to speed up the quotation process and quote more attractive prices. Therefore, they have identified a need for support in the quotation process in order to reduce the quotation lead-time and ensure a higher level of accuracy in the cost estimations. The Quotation Calculator, an application program, has been developed as part of the degree thesis which was carried out at AB Norrahammars Mekaniska Verkstad, NMW 2006/07. This Quotation Calculator can be operated to calculate the material and manufacturing costs of a new product.

NMW has recently acquired licenses for CATIA V5, Dassault Systems, for the purpose of making process planning and NC-programming more efficient. NMW wants to generate the data needed from the machining module for the cost calculations. Hence this project was initiated in order to extract data from CATIA V5 for further use in Quotation Calculator or other computer system in NMW.

This work has resulted in a system developed with a common hosted programming language to extract and transfer information. The system retrieves model geometry from CAD and information on process planning from CAM, then matches the information in the application for the purpose of cost estimation. The system once developed, is supposed to be used for every new product. For this approach, the relationship of the data from CATIA V5 and the Quotation Calculator has been analyzed.

Within this thesis, the focus is on production cost estimation. The method used here is programming in Visual Basic Editor to extract information from the machining module in CATIA V5 and then import them to Microsoft Excel. With standard operations, tables of data and several inputs, the cost calculation and hence the quotation process can be automatically implemented. This work has been generated with the Quotation Calculator. With the correct input data to process planning and this new quotation system, the machining time and the costs can be estimated more accurately and easier. The time and cost information is made available for decision making. As a result, the lead time for the quotation process will be shortened and a relatively more attractive price can be quoted to the customers.

APA, Harvard, Vancouver, ISO, and other styles

15

Rajendran, Saravanan. "Design of Parametric Winglets and Wing tip devices : A Conceptual Design Approach." Thesis, Linköpings universitet, Fluida och mekatroniska system, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-80721.

Full text

Abstract:

Winglets being a small structure play an important role in reducing the induced drag in aircraft. Many types of winglets have been designed and their significance in reducing the drag is published. One of the main objectives of this master thesis work is to study about the winglet design and about their contribution in reducing induced drag. A brief overview of wing tip devices and their performance from the manufacturers as well as from airliner’s point of view are discussed. Moreover, the role of winglet in reducing the drag of commercial civil jet aircraft is studied and the percentage of drag reduction is calculated by a conceptual approach. A320 specifications are taken to perform induced drag reduction calculation with and without winglets. Indeed, the total drag count reduced with the help of winglets accounts for additional payload which will be an advantage for the aircraft operator. Reducing the process time in design is one of the important criteria for any field and hence automation with help of CAD tools is very significant in reducing time. This study also aims at developing an automated model for different types of winglets and wing tip devices with the help of CAD technology focused on reducing design time during the initial design process. Knowledge based approach is used in this work and all the models are parameterized so each model could be varied with associated parameters. The generic model created would take different shapes and switches between different types of wing tip devices as per the user’s requirement with the help of available parameters. Knowledge Pattern (KP) approach is used to develop the automation process. User Defined Features (UDFs) are created for each type of winglet and tip devices. CATIA V5 R18 software is used to develop the models of winglets and tip devices.

APA, Harvard, Vancouver, ISO, and other styles

16

Cichy, Mark Andrew. "Parametric Design: An Implementation of Bentley Systems Generative Components." Thesis, University of Waterloo, 2006. http://hdl.handle.net/10012/2866.

Full text

Abstract:

This thesis addresses the need for flexible parametric design tools. It focuses on the implementation of a particular tool, Bentley Systems' Generative Components, by exploring features, strengths and weaknesses, and how features can be implemented in design. An exposition of Generative Components is introduced to bridge the gap between the potential and existing power of parametric tools. Through a case study of the Bahá'í Temple for South America this thesis explores the implementation of Generative Components. The exposition argues for the validity of parametric research, specifically its ability to streamline and enhance an architectural design process.

The topic of parametric design is further documented in a survey submitted to researchers and developers in the field of parametric research and design. The purpose of this documentation is to place the progression of parametric tools within the context of current development, initiating an open-ended discussion focusing on future research.

This thesis adds to the current development of parametric technology by making particular contributions to tools within the realm of parametric research. Primary contributions include array seeking scripts that search for and replace or duplicate objects, routines for nesting functions within scripts, ideological workflow development and conceptual training through practical application.

APA, Harvard, Vancouver, ISO, and other styles

17

Ohlsson, Johan. "Fixering av Cross-beam på Fixed Caliper 22"." Thesis, Halmstad University, School of Business and Engineering (SET), 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-2471.

Full text

Abstract:

Denna rapport behandlar mitt examensarbete som genomfördes i samarbete med Haldex

Brake AB. Haldex Brake AB håller på och utvecklare en ny generation broms åt lastbilar.

Uppdraget bestod av tre delar. Att ta fram lösningsförslag som säkerhetsställer beläggjärnets

placering i förhållande ett beläggjärn så kallad Cross-beam. Att säkerställa att bultar monteras

med rätt åtdragningsmoment på 230Nm. Den sista tredjedelen av arbetet bestod i att

presentera lösningar som helt eller delvis eliminerar oljud, när olika komponenter med spel,

slår i delar i okhuset.

I projektet har flera olika principkonstruktioner tagits fram och genom Freddy Olsson

utvärderingsmallar har sedan en primärkonstruktion utarbetats fram.

I dem andra två resterande projektdelarna belyses lösningarna väldigt generellt av den

anledningen att det kräver specialkomponenter.

APA, Harvard, Vancouver, ISO, and other styles

18

Karlsson, Catarina. "Användaranpassning av instruktioner." Thesis, University of Skövde, School of Humanities and Informatics, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-2955.

Full text

Abstract:

Detta arbete har syftat till att ta reda på vad som är viktigt att tänka på vid utformning av instruktioner för CAD-användare. Som praktikfall har en studie gjorts på Volvo IT där deras instruktioner för CAD/CAM/CAE-systemet CATIA V5 har granskats. Undersökningen mynnade ut i en användarstudie där erfarna användare av systemet fick möjlighet att diskutera den support som finns i dagsläget samt ställa krav på framtida instruktioner. Kraven som togs fram har legat till grund för riktlinjer för hur morgondagens instruktioner skulle kunna göras mer användaranpassade.

Några områden som är viktiga att ta hänsyn till är bland annat: att ta tillvara på användarnas erfarenhet, involvera användarna vid framtagandet av instruktionerna, ta reda på hur instruktionenrna läses samt skapa rubrikter som underlättar informationssökning för användarna.

APA, Harvard, Vancouver, ISO, and other styles

19

Jönsson, Simon, and Robin Persson. "Konstruktion av maskinbeklädnad." Thesis, Högskolan i Halmstad, Sektionen för ekonomi och teknik (SET), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-25844.

Full text

Abstract:

Vårt examenarbete är utfört i samarbete med InterSystem AB i Ängelholm. InterSystem konstruerar, monterar och säljer transportörsystem samt pallastare tillkunder inom livsmedel, läkemedel och kemiindustrin. Syftet med examensarbetet är att förenkla monteringen av maskinbeklädnaden på företagets pallastare. I dagsläget kräver maskinbeklädnaden en mycket tidsödande monteringsprocess som dessutom utförs på en provisorisk arbetsbänk. Vår uppgift har därför varit att göra förändringar i beklädnadens konstruktion för att möjliggöra en snabbare montering samt att konstruera en arbetsplats där monteringen kan ske snabbt och ergonomiskt. Projektet inleddes med insamling av information främst från personal på InterSystem för att få en uppfattning om problemen med dagens maskinbeklädnad. Därefter arbetades en kriterieuppställning fram i samråd med företaget. Kriterieuppställningen efterföljdes av konceptgenerering, där koncept togs fram både för maskinbeklädnaden och för montageplats. Koncepten utvärderades därefter mot kriterierna och ett antal koncept gick vidare och vidareutvecklades. Vidareutvecklingen gick ut på att förtydliga koncepten, bland annat med hjälp avhandskissning och 3D-modellering. Utöver detta gjordes övergripande kostnadskalkyler samt enklare prototyper. En sista utvärdering av de kvarvarande koncepten utfördes därefter i nära samråd med InterSystem. De koncept som gick vidare utvecklades ytterligare och kompletta 3D-modeller togs fram, likaså en fullskalig prototyp av maskinbeklädnaden. Arbetet har resulterat i en helt ny, betydligt mer lättmonterad konstruktion av maskinbeklädnaden samt en ergonomisk monteringsjigg för att möjliggöra snabb och effektiv montering av maskinbeklädnaden.

APA, Harvard, Vancouver, ISO, and other styles

20

Hamilton, Jakob, and Mahmoud Jeresi. "Geometry-Based Requirements : Support requirement owners in connecting and mediating requirements from SystemWeaver to CATIA V5." Thesis, Linköpings universitet, Maskinkonstruktion, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-149901.

Full text

Abstract:

Requirements of a Volvo car are stored in a requirements management system at Volvo Car Group (VCG). VCG recently implemented a new requirements management system, a system called SystemWeaver. Many different types of requirements are stored in the SystemWeaver software, where the requirements can only be described in text and pictures. However, some requirements are geometry-based, describing some type of shape or measurement in space that the car should fulfil. Geometry-based requirements are stored in Teamcenter and have two components, the requirement text and requirement geometry in the form of CAD-models. The models are used to illustrate the requirement in space. This master thesis examines the possibilities of connecting text-based requirements in SystemWeaver to requirement geometries. The technical aspects are studied as well as the organizational mechanisms of creating and changing a geometry-based requirement. To find a working solution, research relating to the issue gave input to the project. Furthermore, interviews were conducted at different departments at VCG to get insight in the working tasks of requirement management at the company. The project resulted in a concept of a new process, describing the actions of geometry-based requirement management and how requirement geometries should be connected to SystemWeaver. The new concept outlined the logical steps that are required to work with SystemWeaver and geometry-based requirements. The work has laid a foundation on which future studies can be conducted to further streamline management of geometry-based requirements at VCG.

APA, Harvard, Vancouver, ISO, and other styles

21

Zekeyo, S. Jewoh, S. Nezhat, C. Schropp, and S. Miller. "Computergestützte Simulationsschnittstelle – Optimierte Systementwicklung in der Mechatronik." Universitätsbibliothek Chemnitz, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-226124.

Full text

Abstract:

Das Verbinden der Konstruktions- mit der Simulationsdisziplin für Mehrkörpersimulationen ermöglicht es, Produkte in der Konstruktionsumgebung zu gestalten und anschließend in der Simulationsumgebung unter gewünschten Einflüssen auszulegen. Disziplinübergreifende Kommunikation zwischen entsprechenden Softwareprodukten erfolgt meist indirekt, manuell und unter Integritätsverlusten. Zwischen verschiedenen CAD Systemen und MATLAB besteht keine direkte Verbindung, weshalb die SANEON GmbH zusammen mit dem Institut für Flugsystemdynamik der Technischen Universität München eine Schnittstelle zum automatischen, bidirektionalen und integritätsverlustfreien Austausch zwischen den Systemen entwickelt hat. So kann in MATLAB und Simscape Multibody (früher SimMechanics) vollautomatisiert ein Mehrkörpersimulationsmodell auf Basis eines CAD-Modells aufgebaut werden. Darüber hinaus können Daten zurück an die CAD-Umgebung gesendet werden und somit Daten bidirektional ausgetauscht werden. Das hieraus entstandene Alleinstellungsmerkmal des vollautomatisierten und bidirektionalen Austausches unserer Innovation ist ein Novum auf dem Markt. Mit CASIN (Computer Aided Simulation INterface) stellen wir eine neuartige Plattform bereit, die Ihnen den domänenübergreifenden Transfer von CAD-Daten zwischen Konstruktions- und Simulationsumgebung erlaubt. So kann auf Bauteil- und Baugruppeninformationen per Knopfdruck unmittelbar in MATLAB zugegriffen werden. Benutzerdefinierte CAD-Parameter können aus MATLAB heraus modifiziert werden. Somit ist die Grundlage für einen iterativen Datenaustausch zwischen den Disziplinen geschaffen.

APA, Harvard, Vancouver, ISO, and other styles

22

Badreddine, Jawad. "Modélisation du grenaillage ultrason pour des pièces à géométrie complexe." Thesis, Troyes, 2014. http://www.theses.fr/2014TROY0015/document.

Full text

Abstract:

Le grenaillage ultrason est un procédé mécanique de traitement de surfaces. Il consiste à projeter des billes à la surface de pièces métalliques, à l’aide d’un système acoustique vibrant ultrasonore. Lors du traitement, les billes sont contenues dans une enceinte spécialement conçue pour la pièce à traiter, et adoptent un comportement similaire à celui d’un gaz granulaire vibré. Le grenaillage ultrason sert à introduire des contraintes résiduelles de compression dans le matériau traité. Ces contraintes de compression sont bénéfiques pour la tenue en fatigue de la pièce et sa résistance à la corrosion sous contraintes.L’objectif des présents travaux de thèse consiste à modéliser la dynamique des billes pendant le traitement, et pour des pièces et géométries complexes. En effet, depuis son industrialisation, la mise au point du procédé se fait de manière empirique qui, avec la complexification des pièces mécaniques traitées pousse cette approche à ses limites. La mise au point peut donc s’avérer coûteuse en temps et aboutir à une solution partiellement optimisée. Ainsi, le modèle développé donne accès à une compréhension détaillée du grenaillage ultrason dans des conditions de traitement industrielles. Il constitue pour la première fois un outil d’aide à la conception des enceintes de traitement, offrant la possibilité d’une meilleure maitrise et optimisation du traitement, tout en réduisant les coûts de mise au point. La seconde contribution est de fournir aux modèles de prédiction des contraintes des données fiables et réalistes
Ultrasonic shot peening is a mechanical surface treatment process. It consists on projecting spherical shot onto a metallic surface, using an ultrasonic accoustic system. During the treatement, the shot are contained in a chamber, specially designed for the peened part, and behave similarely to a vibrated granular gas. Ultrasonic shot peening is used to introduce compressive residual stresses in the peened material. These compressive stresses help increasing the fatigue life span of the part and its resistance to stress corrosion cracking.The objectif of the present work consists on modeling the shot dynamics of the shot during the traitement, and for complex parts and geometries. Since its industrialization, the choice of the process parameters is done experimentally with trial and error. And with the ever increasing complexity of the peened parts, this approach is reaching its limits; thus becoming sometimes time consuming and providing partially optimized solutions.Therfore, the developped model gives access to a detailed understanding of ultrasonic shot peening in industrial treatment conditions. It represents for the first time a support tool for the design of peening chambers. This offers the possibility of a better control and optimization of the process, while reducing development costs. The second contribution lies in the model capacity to provide reliable and realistic input data to residual stresses prediction models

APA, Harvard, Vancouver, ISO, and other styles

23

Crespo, Catia [Verfasser], Elisabeth [Akademischer Betreuer] Knust, Elisabeth [Gutachter] Knust, and Marius [Gutachter] Ader. "Maturation of Photoreceptor Cells During Zebrafish Retinal Development / Catia Crespo ; Gutachter: Elisabeth Knust, Marius Ader ; Betreuer: Elisabeth Knust." Dresden : Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2018. http://d-nb.info/1226813119/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Crespo, Catia Verfasser], Elisabeth [Akademischer Betreuer] [Knust, Elisabeth [Gutachter] Knust, and Marius [Gutachter] Ader. "Maturation of Photoreceptor Cells During Zebrafish Retinal Development / Catia Crespo ; Gutachter: Elisabeth Knust, Marius Ader ; Betreuer: Elisabeth Knust." Dresden : Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2018. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-237586.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Pettersson, Viktoria, and Malin Magnusson. "Efficiency and Automation in the Interface between Airframe Development and Production : A study to identify and reduce time-consuming activities with focus on the methodology of In-Process Part Definition." Thesis, Linköpings universitet, Maskinkonstruktion, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-159933.

Full text

Abstract:

This thesis started as an initiative from one of the co-authors that previously worked at SAAB AB during summer 2018. During the summer she worked with the design process of In-process part Definition (IPPD) and an interest emerged for making it more efficient. The design process of IPPD (DPOI) is where a design article, designed in CATIA, become manufacturable and adapted for assembly. The DPOI can be seen as the interface between the department of Airframe development and Production at SAAB AB. The first step was to investigate the current DPOI and conduct a pre-study to find time-consuming activities. The pre-study consisted of five interviews, an observational study and a time study were the aims was to collect employees' own opinions, approve a pre-defined workflow divided into twelve elements and find problem areas. Element 1.0-11.0 is tasks within the DPOI and element 12.0 is the first step in the review process called Checker. Element 4.0 and 8.0 were divided further into parallel activities where the operators in the time study performs either, e.g., E4.0 (macro) or E4.1 (manually). To find time-consuming activities a time study was performed. The authors of this thesis acted observers and clocked each element while three operators denoted A-C designed 24 IPPDs. The results from the time study showed that elements 1.0, 3.0, 4.1 and 7.0 were time-consuming and E4.1 had potential to become automated. The selection of 2-3 problems was carried out through two Weighted Sum Models (WSM) where criteria was defined and solutions was listed. Each solution was weighted to each criterion and got a total grade. The selected problems, based on the total grade, were: Documents and Combined macro. Documents and manuals for scenario 5, 6 and the entire design process of IPPD was developed to make new employees learning process more efficient. A draft macro for scenario 5 and new complete macros for scenario 1 and 6 was developed and used in the comparative study. The comparative study was conducted like the previous time study but instead the new developed macros was used to make E4.0 more efficient and eliminate E4.1. In the comparative study only E4.0 was clocked for all 24 IPPDs in the time study. The result showed that E4.0 has become average 60% more efficient for all IPPDs and the total time with the new developed macros for E4.0 vs E4.1 has become 14,3% more efficient. Problems and time-consuming activities has been found and improved. The performed comparative study shows that the DPOI can be minimized further in terms of time; there are possibilities to make more elements from the DPOI automated.

APA, Harvard, Vancouver, ISO, and other styles

26

Přibilík, Tomáš. "Aplikace CAM softwaru PowerMILL při programování lopatkového kola." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-231213.

Full text

Abstract:

This master’s thesis is focused on modeling and creation of NC programs for machining of the impellers. Software used for modeling is CATIA V5R20 from Dassault Systémes company. For creation of NC programs software PowerMILL from Delcam company is used. Verification of functionality of created NC programs is done in Sinumerik 840d control system.

APA, Harvard, Vancouver, ISO, and other styles

27

Luu, ViChi. "Methodology development for parametric CAD modeling in CATIA V5 to aid simulation driven design using turbine volute as a case study." Thesis, Linköpings universitet, Maskinkonstruktion, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-125628.

Full text

Abstract:

This report is the documentation of a master’s thesis which was conducted at Scania CV AB in Södertälje. In this study, the benefits, challenges and conditions of using parametric CAD-models for aiding CFD-simulations and performance-optimization in the product development within internal combustion engines have been assessed. The goal of the thesis included developing and proposing a methodology for design engineers at Scania which will aid them in creating parametric CAD-models which are robust, flexible, comprehensible and intelligent. The study also included assessing the benefits and pre-requisites of such methodology with both practical and theoretical approaches. The ultimate goal of this entire study was to create value for the organization by reducing lead-time in the design process while promoting the production of high quality products. A case-based approach was applied in the study in which modeling strategies resulting from practical investigations and analyzing existing methodologies were implemented on a CAD-model representing the gas-volume of a turbine volute. The chosen strategies were evaluated and subsequently documented as a part of the methodology or discarded depending on its support for the parameterization. The final methodology itself was evaluated based on the quality of the parameterized CAD-model, the time required to create the model and its compatibility to the present design process at Scania CV AB. Finally the methodology was discussed with respect to the different evaluations, and the defined research questions were discussed and answered. The results of the thesis revealed that if parametric CAD-models are made in a structured, standardized and conscious manner, they are able to be highly robust and flexible which gives the models the ability to assume a big set of different forms. The methodology is recommended to be tested in a pilot project and be implemented through internal courses at the company. It was concluded that a methodology which aids the design engineers in creating parametric CAD-models will be the key towards implementing parametric CAD-models in the company and also enabling the many benefits of parameterization, which includes reduced lead-time, enhanced component performance, increased knowledge about the component, and promotion of collaboration among engineers. It was also concluded that parametric models are best suited when the existing design freedom is big and when the time permits performance analyses via optimizations, while challenges include ensuring that the model is parameterized correctly with respect to the CFD-engineers’ wishes while taking into account the requirements from other disciplines. Therefore it is very important to establish a communication between the different engineers. Ultimately, when parametric models are established in the organization, they are recommended to be implemented eventually in both short-term and long-term projects within Scania for its beneficial properties.

APA, Harvard, Vancouver, ISO, and other styles

28

Cayuela, Franco J. "La ingeniería colaborativa PLM aplicado en un proyecto internacional: gestión del ciclo de vida de los productos - Catia V6." Bachelor's thesis, Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Escuela de Ingeniería Aeronáutica, 2015. http://hdl.handle.net/11086/1979.

Full text

Abstract:

Trabajo Final (IA)--FCEFN-UNC, 2015
Busca transmitir de una manera clara y entendible una guía hacia la ingeniería colaborativa a partir del PLM (Product Lifecycle Management o Gestión del ciclo de vida de los productos), con el objetivo principal de impulsar el PLM en la red académica Argentina y dar a conocer los beneficios de la implementación de esta metodología de trabajo en una PYME o grandes empresas

APA, Harvard, Vancouver, ISO, and other styles

29

Bergelin, Magnus, and Patrik Eriksson. "Hjullyft." Thesis, Halmstad University, School of Business and Engineering (SET), 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-729.

Full text

Abstract:

The graduation essay has been carried out in co-operation with Kalmar Industries in Lidhult, Sweden. The purpose of our essay was to develop a complete construction solution on a hoist that could lift a laying wheel, lift it up and then turn it 90 degrees. After that the wheel shall be placed in a special holder.

The background of the essay is a record of reports of damage wheels when they been incorrect lifted with a forklift. The hoist shall be used together with the same forklifts that manage the wheels today.

Together with our instructor at Kalmar Industries we developed a requirement specification and from that we got free hands.

However this was not the main task from the beginning, then a simular hoist should be develop but used directly in the assembly workshop without using a forklift.

We started to find principle solutions that later was evaluated against the requirement specification. The best proposals were analyzed by hand and in Catia V5: s FEM-module.

After a couple of bettering proposal it resulted in a tenable solution.

Drawings, component specification and a risk analyze was made to finally have a complete solution.

Kalmar Industries decided to order material and manufacture the construction. The benefits with our construction compared to the daily solution are decreased risk of person injury, equipment-, and wheel damage. Our essay resulted in a complete construction ready to use.

APA, Harvard, Vancouver, ISO, and other styles

30

Amin, Handren. "A comparative study of 2 CAD-integrated FE-programs using the linear static analysis." Thesis, Halmstad University, School of Business and Engineering (SET), 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-2355.

Full text

Abstract:

This Master’s thesis is summery of a comparative study of 2 commercial CAD-integrated

FE-programs. These FE-programs were CATIA v5 and ABAQUS 6.3-7. The primary

objective of this study is to investigate the basic FEA capabilities of CATIA and

ABAQUS 6.7-3 in performing the linear static analysis and to identify whether there are

any differences and similarities between results the both Finite Element FE codes give.

The overall research question in the present thesis is: Do different FE programs, here

CATIA and ABAQUS, give the same results for FE analysis giving the same models if

subjected to the same boundary conditions? This research seeks to achieve its aims

through making a comparative qualitative study. Certain pre-selections were performed in

advance of conducting Finite element analysis and the comparison process to ensure that

results would reflect only the most relevant and meaningful differences and similarities

between the both FE-codes. Five different 3D solid models have been selected to perform

linear static Finite element analysis on. All these models (case studies) are created in

CATIA V5 and the linear static analysis conducted on using FE-codes CATIA v5 and

ABAQUS 6.7-3. Three static responses (results) of the linear static analysis have been

adopted as criteria for comparisons purposes. These criteria were: (1) displacements, (2)

Von Mises stress, and (3) principal stress. The results of comparisons showed that there is

a very good agreement in most cases and small gap between in a few cases. Results of

this study demonstrate that the both FE-programs CATIA v5 and ABAQUS 6.7-3 have

good capabilities to perform FE-analysis and they give very near results. Reason behind

differences is that each of them uses a different algorithm for solving problems. The final

answer for the research question is given with valuable recommendations for future work

in the scope of this research.

APA, Harvard, Vancouver, ISO, and other styles

31

Möllberg, Nadine. "Retractable Boarding Step to Scania Crew Cab : Product Development, Design, FEM Simulations and Verification." Thesis, Karlstads universitet, Institutionen för ingenjörsvetenskap och fysik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-62580.

Full text

Abstract:

This master thesis treats the development of a new solution for a retractable boarding step to Scania trucks, which is a part of the modular system. Some customers have the need to transport additional passengers. For such applications, Scania provides trucks featuring a Crew Cab, which is an extended cab with rear doors. Easy exit through the rear doors is important for many customers who use this type of cabin. Therefore, there is a possibility to get a retractable boarding step, equipped with an upper step and a lower foldable, that enables easy entry and exit. This function is especially important for fire fighters carrying heavy equipment and therefore has more difficulties exiting the truck. The robustness and dependability of the function is critical to ensure the safety. If it fails, the legal requirements are not met while driving or even worse, injury may occur. Pneumatics is used for the fold out of the step and a spring folds it in. The current boarding step needs improvement in order for it to be dependable and robust. If the boarding step have not been folded out, the entry and exit of the cab is not possible. This thesis covers the product development, simulations and verification of a new boarding step concept that shall improve the entry- and exit function, making it more robust and dependable. Through problem identification, a product specification and a thorough concept generation and development process a final concept has produced. Simulations were made in order to verify that the step could be stepped on when entering and exiting the cab. The result was a lower step, sliding on linear bearings in a linear motion. This enabled egress and ingress independent of the extraction or retraction of the step. This makes it more reliable than the current product. The sliding mechanism need to be tested in order to ensure the robustness. A prototype was made in order for the function to be tested.
Detta examensarbete behandlar utvecklingen av en ny lösning för ett fällbart insteg till Scania lastbilar, som är ett modular product Scania utvecklar lastbilar till ett brett spektrum av tillämpningar. Behov av att transportera ytterligare passagerare kan finnas. För sådana tillämpningar erbjuder Scania specialfordon med manskapshytt, en förlängd hytt med bakdörrar. Enkel urstigning genom bakdörrarna är viktigt för många kunder som utnyttjar denna typ av hytt. Därför finns möjligheten att få ett utfällbart steg som förenklar in- och urstigning, utrustad med ett fast övre steg och ett fällbart nedre. Detta är särskilt viktigt för brandmän som bär tung utrustning och därför har svårare att ta sig ur bilen. Det utfällbara steget fälls ut för enkel åtkomst när det behövs och viks in under körning. Detta för att uppfylla lagkrav för fordonsbredd. Tryckluft används för att fälla ut steget och en fjäder används för att fälla in det. Flera fall där problem gällande in- och utfällningsmekanism har påvisats, fälls inte steget ut är det inte möjligt att stiga i och ur hytten. Förbättring av robusthet och pålitlighet behövs genomföras. Examensarbetet ska förbättra instignings- och urstigningsfunktionen och se till att den är robust och pålitlig.Genom att identifiera problemet, upprätta en produktspecifikation och genomföra en grundlig konceptgenerering och utvecklingsprocess har ett slutgiltigt koncept tagits fram. FEM simuleringar gjordes för att kunna verifiera att insteget håller för att kliva på. Resultatet blev ett undre steg, som glider på linjärlager. Detta möjliggör i och urstigning oberoende av i vilket läge steget är. Det gör den mer tillförlitlig än dagens produkt. Glidmekanismen måste testas för att kunna säkerställa dess robusthet. En prototyp har tillverkats för att testa detta.

APA, Harvard, Vancouver, ISO, and other styles

32

Nocera, Catia. "Implementação de práticas gerenciais e identidade organizacional : o caso de uma organização militar / Catia Nocera ; orientador, Paulo Otavio Mussi Augusto." reponame:Biblioteca Digital de Teses e Dissertações da PUC_PR, 2008. http://www.biblioteca.pucpr.br/tede/tde_busca/arquivo.php?codArquivo=1477.

Full text

Abstract:

Dissertação (mestrado) - Pontifícia Universidade Católica do Paraná, Curitiba, 2008
Bibliografia: f. 117-123
O presente estudo tem por objetivo verificar o efeito da implantação de práticas gerenciais na identidade de uma organização militar. Reside neste último aspecto um ponto relevante do trabalho, já que se trata de um contexto específico pouco explorado no
The current study aims to verify the effect of the implementation of management practices on the identity of a military organization. In the latter aspect there is another important point of the work, since it is a very specific context, little explored i

APA, Harvard, Vancouver, ISO, and other styles

33

Olofsson, Erik. "Chassis calculations for Frame design." Thesis, Linköpings universitet, Mekanik och hållfasthetslära, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-121848.

Full text

Abstract:

This is a Masters Thesis report of a project carried out at Scania AB in Södertälje. The project concerns rationalizing Chassis calculations for use in truck Frame design. The subject for analysis is a six-wheeled articulated truck, and the load cases under study is Lateral Loading, Frame Torsion and Vertical Load on Kingpin. Making robust deformation and stress models with a calculation time sufficiently short and accuracy consistently high for efficient design work is an arduous task. This report presents several approaches to tackle this type of problem. By means of simplifying contemporary modeling approaches and methods and automating the setup process, a method that enables short calculation iterations on a chassis frame of a truck is achieved. This is done using the Catia GAS framework in conjunction with several other licences commonly used by designers.

APA, Harvard, Vancouver, ISO, and other styles

34

Escolano, Andrés Inés. "Knowledge-Based Flight Control System Integration in RAPID." Thesis, Linköpings universitet, Fluida och mekatroniska system, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-113531.

Full text

Abstract:

This thesis work presents a parametrized integration of the flight control system within RAPID by means of the automation in CATIA V5, using Knowledge Pattern. Nowadays aircraft’s design and development processes are not only time-consuming but also incur high economic cost. In addition, system integration is highly a multi-disciplinary design process which often involves a large number of different discipline teams working at the same time and space. The main objective of this thesis is to investigate how CAD (Computer Aided Design) software can be used in the early design stages to define the flight control system integration. The purpose of this work to improve the functionality of an in house produced aircraft conceptual design tool carried out at the Division of Fluid and Mechatronic Systems, Linköping University. The work consists of preliminary integration of the RAPID flight control system and the hydraulics associated to it. By defining several reusable templates, the automatic definition of a flight control system within the RAPID aircraft has been achieved. Moreover it is a parametrical model which allows the user to modify a high number of features as desired to enhance the design process. For this, a user interface in Microsoft Excel connected to CATIA has also been attained.

APA, Harvard, Vancouver, ISO, and other styles

35

Schnauffer, Peter. "Multidisziplinärer Datenfluss im Entwicklungsprozess des Flugzeugbaus am Beispiel eines Senkrechtstarters." [S.l. : s.n.], 2006. http://nbn-resolving.de/urn:nbn:de:bsz:93-opus-26884.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

Kodys, Martin. "Návrh metodiky tvorby 3D modelu femorální části kolenní náhrady." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2011. http://www.nusl.cz/ntk/nusl-229892.

Full text

Abstract:

The aim of the Diploma Thesis is to propose the methodology of a 3D model creation of a femoral part of a knee joint replacement. As the knee joint is the most loaded joint of the human body, the function, description and biomechanics relation is described in first part of the Thesis. The second part is focused on degenerative damage of knee joints that leads to the implantation of standard knee joint replacements. The third part deals with the construction of standard knee joint replacements and their surgery implantation. The last part of the Thesis describes the creation of an individual knee joint replacement, especially the femoral part.

APA, Harvard, Vancouver, ISO, and other styles

37

Mårtensson, Daniel. "Utformningen av ett förstärkt skruvförband på en differentialväxel i bandvagnen BvS10 : Analys av olika förband med hjälp av CATIA och MATLAB." Thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-104626.

Full text

Abstract:

This is a thesis presents a differential gear which is found in a tracked vehicle called BvS10. The tracked vehicle is manufactured by BAE Systems Hägglunds AB in Örnsköldsvik, Sweden. The differential gear has a bolted house. The differential meets the requirement specifications, but the problem is that the bolts are sheared off because of the extreme torque that the differential is exposed to resist. Previous report on the differential show pictures of bolts which have been sheared off at the threads. This report is also includes three lists that explain seven different proposals which some are approved and some are not, and the report also presents the force, tensile, and shear stress. In a bolted connection there is both axial tension stress and radial shear stress, which can lead to wear out and broken bolts. To solve the problem, better bolts are need for the differential gear housing halves. The bolts are from M8 to M10 and all bolts are not directly compatible, so geometric modifications might have to be done. This reports proposes several solutions to this complex problem and also analyzes the proposed solutions. The report also describes various theories from a technical and a historical point of view. Two flow charts have been created to show the work towards the presented solution. Although the analysis to welded joints and wedge joints have been included in the proposed solution. The report propose a tight-fit bolt with a tolerance specially made for the differential gear, so the shear stress occurs at the non-threaded part of the bolt. The tight-fitted bolt is recommended to be M8 12.9 UNB because of it’s safety factor. Larger bolts may not directly fit in the differential housing halves due to there is no enough material.

APA, Harvard, Vancouver, ISO, and other styles

38

Real, Ehrlich Catia [Verfasser], Jörg [Akademischer Betreuer] Blankenbach, and Andreas [Akademischer Betreuer] Eichhorn. "Echtzeit-Positionierung für Fußgänger innerhalb von Gebäuden auf Basis von Smartphone-Sensoren / Catia Maria Real Ehrlich ; Jörg Manfred Blankenbach, Andreas Eichhorn." Aachen : Universitätsbibliothek der RWTH Aachen, 2018. http://d-nb.info/1186269960/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

39

Wikström, Jonas. "3D Model of Fuel Tank for System Simulation : A methodology for combining CAD models with simulation tools." Thesis, Linköpings universitet, Maskinkonstruktion, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-71370.

Full text

Abstract:

Engineering aircraft systems is a complex task. Therefore models and computer simulations are needed to test functions and behaviors of non existing systems, reduce testing time and cost, reduce the risk involved and to detect problems early which reduce the amount of implementation errors. At the section Vehicle Simulation and Thermal Analysis at Saab Aeronautics in Linköping every basic aircraft system is designed and simulated, for example the fuel system. Currently 2-dimensional rectangular blocks are used in the simulation model to represent the fuel tanks. However, this is too simplistic to allow a more detailed analysis. The model needs to be extended with a more complex description of the tank geometry in order to get a more accurate model. This report explains the different steps in the developed methodology for combining 3-dimensional geometry models of any fuel tank created in CATIA with dynamic simulation of the fuel system in Dymola. The new 3-dimensional representation of the tank in Dymola should be able to calculate fuel surface location during simulation of a maneuvering aircraft. The first step of the methodology is to create a solid model of the fuel contents in the tank. Then the area of validity for the model has to be specified, in this step all possible orientations of the fuel acceleration vector within the area of validity is generated. All these orientations are used in the automated volume analysis in CATIA. For each orientation CATIA splits the fuel body in a specified number of volumes and records the volume, the location of the fuel surface and the location of the center of gravity. This recorded data is then approximated with the use of radial basis functions implemented in MATLAB. In MATLAB a surrogate model is created which are then implemented in Dymola. In this way any fuel surface location and center of gravity can be calculated in an efficient way based on the orientation of the fuel acceleration vector and the amount of fuel. The new 3-dimensional tank model is simulated in Dymola and the results are compared with measures from the model in CATIA and with the results from the simulation of the old 2-dimensional tank model. The results shows that the 3-dimensional tank gives a better approximation of reality and that there is a big improvement compared with the 2-dimensional tank model. The downside is that it takes approximately 24 hours to develop this model.
Att utveckla ett nytt flygplanssystem är en väldigt komplicerad arbetsuppgift. Därför används modeller och simuleringar för att testa icke befintliga system, minska utvecklingstiden och kostnaderna, begränsa riskerna samt upptäcka problem tidigt och på så sätt minska andelen implementerade fel. Vid sektionen Vehicle Simulation and Thermal Analysis på Saab Aeronautics i Linköping designas och simuleras varje grundflygplanssystem, ett av dessa system är bränslesystemet. För närvarande används 2-dimensionella rätblock i simuleringsmodellen för att representera bränsletankarna, vilket är en väldigt grov approximation. För att kunna utföra mer detaljerade analyser behöver modellerna utökas med en bättre geometrisk beskrivning av bränsletankarna. Denna rapport går igenom de olika stegen i den framtagna metodiken för att kombinera 3- dimensionella tankmodeller skapade i CATIA med dynamisk simulering av bränslesystemet i Dymola. Den nya 3-dimensionella representationen av en tank i Dymola bör kunna beräkna bränsleytans läge under en simulering av ett manövrerande flygplan. Första steget i metodiken är att skapa en solid modell av bränslet som finns i tanken. Därefter specificeras modellens giltighetsområde och alla tänkbara riktningar hos accelerationsvektorn som påverkar bränslet genereras, dessa används sedan i den automatiserade volymanalysen i CATIA. För varje riktning delar CATIA upp bränslemodellen i ett bestämt antal delar och registrerar volymen, bränsleytans läge samt tyngdpunktens position för varje del. Med hjälp av radiala basfunktioner som har implementerats i MATLAB approximeras dessa data och en surrogatmodell tas fram, denna implementeras sedan i Dymola. På så sätt kan bränsleytans och tyngdpunktens läge beräknas på ett effektivt sätt, baserat på riktningen hos bränslets accelerationsvektor samt mängden bränsle i tanken. Den nya 3-dimensionella tankmodellen simuleras i Dymola och resultaten jämförs med mätningar utförda i CATIA samt med resultaten från den gamla simuleringsmodellen. Resultaten visar att den 3-dimensionella tankmodellen ger en mycket bättre representation av verkligheten och att det är en stor förbättring jämfört med den 2-dimensionella representationen. Nackdelen är att det tar ungefär 24 timmar att få fram denna 3-dimensionella representation.

APA, Harvard, Vancouver, ISO, and other styles

40

Aldegård, Alexander, and William Gapinski. "Metodjämförelse för fixturkonstruktion till prototyptillverkning." Thesis, Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-37026.

Full text

Abstract:

The thesis work is done in collaboration with Prodtex AB, which works to develop digital tools to facilitate the constructor´s work in virtual environments, for instance CAFD within CATIA V5. What the client wanted the project participants to perform was a comparison of the company's semi-automatic software for fixture design, and the traditional construction method with CATIA. The reason for the method comparison is because Prodtex AB requires data, which they can present to potential customers. The participants produced a method to enable the necessary components of the project, the method consisted of training in fixture design, fixture construction and work with the consulting company´s application. These elements have been essential for the comparison to be reliable. The main part of the assignment consisted of constructing units for the given fixture. The reason behind this is due to the necessity of a certain level of experience in fixture design, which is required to be able to assemble units with an accurate and efficient procedure. The method comparison generated data in terms of time in the measurement areas, input, design and export that the project participants analyzed and compiled in the result section. Based on the statistics, participants were able to find answers about which features the software made the most time savings of, and how abundant these were in relation to the traditional design method. A conclusion about when it was beneficial for a company to invest in the software was based on reasoning deduced from the outcome discussion.

APA, Harvard, Vancouver, ISO, and other styles

41

Svensson, Robert, and Simon Rydberg. "Konstruktionsoptimering av teknisk utrustning." Thesis, Högskolan i Halmstad, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-44851.

Full text

Abstract:

Detta examensarbete handlar om konstruktionsoptimering av en ny och innovativteknisk produkt som riskerar att skadas då användaren av misstag tapparprodukten. Arbetet belyser tidigare studier där dropptester utförts för att insamlakunskap inför viktiga moment i detta arbete. Dropptest av produkten genomfördesoch data samlades in med hjälp av accelerometer och höghastighetskamera.Insamlad data presenteras i olika grafer och beräkningar som beskriversammanstötningsförloppet. Lösningsförslag genereras med CAD programmetCatia V5, sedan simulerades lösningsförslagen i programmet abaqus/explicit eftersamma principer och förhållanden som utfört dropptest visade. Genomfördasimuleringar verifierades med hjälp av insamlad data. Projektgruppen presenterarolika koncept av lösningsförslag till företag X genom olika exempel påkonstruktiva lösningar eller förslag till byte av befintligt produktmaterial. Underprojektets gång uppstod en del svårigheter i de olika delarna av studien, dessadiskuterades i studiens resultat- och metoddiskussion. Avslutningsvis taskonstruktionsoptimeringens inverkan på sociala, ekonomiska och miljömässigaaspekter i anseende.
This thesis is about design optimization of a new and innovative technical productthat risks being damaged when the user accidentally drops the product. The workillustrates previous studies where drop tests have been performed to gatherknowledge before introducing important stages in this work. Droptesting of theproduct was performed and data were collected using an accelerometer and ahigh-speed camera. Collected data are presented in various graphs andcalculations that describes the stages of impact. Solution proposals were generatedwith the CAD program Catia V5, then the solution proposals were transferred tothe program abaqus/explicit were the same principles and conditions that occurredduring the droptest was implemented in the simulations. Completed simulationswere verified using collected data. The project group presents different concepts iiof solution proposals to company X through various examples of constructivesolutions or proposals for replacement of existing product material. During theproject, some difficulties arose in the various parts of the study, these werediscussed in the study's results and method discussion. Finally, the impact ofdesign optimization on social, economic and environmental aspects was taken intoaccount.

APA, Harvard, Vancouver, ISO, and other styles

42

Čička, Peter. "Využití programových prostředků GIS a CAD pro tvorbu digitálního modelu terénu." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2014. http://www.nusl.cz/ntk/nusl-227119.

Full text

Abstract:

Master thesis is focused on formation of digital terrain model. The aim of work is to become acquainted with a dilemma in regard to terrain formation theory from the very beginning of data gathering process up to landscape digital model creation of interested area. The result of thesis is to compare advantages and disadvantages of particular programs destined for 3D modelling (ArcGIS, AutoCAD, Atlas DMT, Microstation, Catia, SolidWorks) in relation to geodetics and geoinformatics.

APA, Harvard, Vancouver, ISO, and other styles

43

Gomes, Jansen Anderson. "Simulação digital utilizada para desenvolvimento de um projeto automobilístico." Universidade de Taubaté, 2016. http://www.bdtd.unitau.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=851.

Full text

Abstract:

Diante de um cenário automobilístico que consiste em uma busca incessante por reduções de custos e de tempo para um projeto a importância da simulação digital se destaca de forma contundente pois permite a antecipação de problemas bem como implementação de ações para resolvê-los ainda durante a fase digital, o que remete a uma redução de custos e de tempo. Um dos principais objetivos das montadoras a cada lançamento de um novo veículo é a manutenção e incremento das vendas, não levando em conta somente a divisão de mercado que cada montadora possui, mas também a quantidade real de carros que cada montadora vende. Com o cenário competitivo e a necessidade de aumentar o número de carros vendidos, faz-se necessário o desenvolvimento de novas tecnologias para redução de tempo e de custos necessários para realizar um lançamento de um veículo. Uma técnica rotineiramente utilizada dentre as montadoras é de produzir em um país um veículo que já é produzido em outro país, porém para que isso ocorra com sucesso, faz-se necessário um estudo mercadológico para identificação de possíveis modificações necessárias para atender não somente a legislação vigente do País, mas também as necessidades desse novo mercado. Para conseguir programar essas modificações necessárias nos produtos e garantir um lançamento mais enxuto tanto em tempo como em custos, o uso de ferramentas computacionais passa a ser cada vez mais utilizados. O objetivo do presente trabalho é a verificação dos resultados na prática da utilização da metodologia de simulação digital não mais focada no desenvolvimento do processo e sim no desenvolvimento de uma adaptação necessária ao veículo, porém sem perder a sinergia com o processo já desenvolvido e implantado em outra planta do grupo. Foram obtidas significativas reduções de tempo e de custos devido à utilização desta metodologia, e com os resultados obtidos é possível auxiliar no planejamento da modernização de um veículo já existente, buscando-se alternativas para diminuição do tempo de lançamento, bem como no estudo de diversas possibilidades de produto para minimizar os impactos financeiros no desenvolvimento posteriormente do processo. Para o teste computacional, foram utilizados os softwares comerciais de simulação Catia e Process Designer. Este estudo delimita-se a aplicação do conceito de simulação digital na implementação de um projeto na unidade de Taubaté, cidade do Estado de São Paulo.
One of the automakers main goals in each new vehicle launching is to keep and increase sales, always focused not only in the market share, but also increasing the number of vehicles sales. In addition to this situation, there is also a more competitive market, with more automakers offering more variety and modern cars, with these challenges the automakers need to develop a new manner to reduce the vehicle launch timing and costs. A method already used among the automakers is to produce in such country a vehicle that is already assembled in another country, but to succeed it is required a marketing analysis to identify possible required modifications to accomplish with not only legal aspects but also the needs of the new market. In order to execute those product modifications and guarantee a leaner launch regarding timing and costs, the automakers start using computational tools to achieve this goal. The present study has the objective to share the results of using digital simulation methodology, when used to make the vehicle improvements to sell these cars on the domestic market, focused in product engineering, keeping the synergy with the process already developed and installed in any other country. It was achieved relevant results regarding development time and cost reduction with this methodology. To the computational tests, it was used the softwares catia and process designer. The obtained results may be used to better plan the modernization of an existing vehicle, seeking for alternatives to reduce the launch timing, as well checking the different product possibilities to minimize financial development impacts after the launch process.

APA, Harvard, Vancouver, ISO, and other styles

44

Greň, Martin. "Návrh a pevnostní kontrola systému řízení letounu TL 4000." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-232028.

Full text

Abstract:

Tato diplomová práce se zabývá návrhem mechanismu řízení letounu TL 4000, určení sil působících na jednotlivé součásti řízení a jejich pevnostní analýzou. V této práci jsou vypracovány všechny tři složky řízení a to tak, aby vyhovovaly stavebnímu předpisu CS 23.

APA, Harvard, Vancouver, ISO, and other styles

45

Kurth, Robin. "Automatisierte Ermittlung bauteilspezifischer Kennwerte in komplexen Produktstrukturen zur Abstraktion umfangreicher Gesamtbaugruppen im Textilmaschinenbereich." Universitätsbibliothek Chemnitz, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-172507.

Full text

Abstract:

Steigende Komplexität von Maschinen und Anlagen sowie unternehmensindividuelle Produktstrukturen führen zu Herausforderungen im Handling großer 3D-Modelle in kommerziell verfügbaren CAD-Systemen. Der Vortrag thematisiert die Anwendung unterschiedlicher Automatisierungsmöglichkeiten des CAD-Systems CATIA V5® der Firma Dassault Systèmes. Hierbei wird zum einen auf die besonderen Herausforderungen im Konstruktionsbereich des Textilmaschinenbaus eingegangen. Zum anderen werden Vorschläge für eine parametergesteuerte Anlagenkonzeption auf Basis von Knowledgeware, eine automatisierte Abstraktion großer Baugruppen und für die automatisierte Ermittlung masseabhängiger Parameter komplexer Produkte vorgestellt.

APA, Harvard, Vancouver, ISO, and other styles

46

Erener, Kaan. "Developing A Four-bar Mechanism Synthesis Program In Cad Environment." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613354/index.pdf.

Full text

Abstract:

Flap, aileron, rudder, elevator, speed brake, stick, landing gear and similar movable systems used in aerospace industry have to operate according to the defined requirements and mechanisms used in those systems have to be synthesized in order to fulfill those requirements. Generally, without the use of synthesis tools, synthesis of mechanisms are done in CAD environment by trial-error and geometrical methods due to the complexity of analytical procedures. However, this approach is time consuming since it has to be repeated until the synthesized mechanism has suitable mechanism properties like transmission angle and connection points. Due to above reasons, a software developed for synthesis of mechanisms within the CAD environment can utilize all the graphical interfaces and provides convenience in mechanism design. In this work, it is aimed to develop a four-bar mechanism synthesis tool which is compatible with CATIA V5 by considering the requirements of aerospace industry. This tool performs function, path and motion synthesis and shows suitable mechanisms in CATIA according to input obtained from CATIA and mechanism properties.

APA, Harvard, Vancouver, ISO, and other styles

47

Gopinath, Varun. "Industrial Silo Optimization." Thesis, Linköpings universitet, Maskinkonstruktion, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-67645.

Full text

Abstract:

This thesis aims to build a working design-analyze-optimize methodology for Alstom Power Sweden AB at Växjö, Sweden. In order to be profitable in today’s competitive industrial product market, it is necessary to engineer optimized products fast. This involves CAD design and FEA analysis to work within an optimization routine in a seamless fashion which will result in a more profitable product. This approach can be understood as a model-based design, where the 3D CAD data is central to the product life cycle. The present approach provides many benefits to a company because of the use of a central database ensure access to the latest release of the 3D model. This allows for a streamlined design to fabrication life cycle with inputs from all departments of a product based company. Alstom is looking into automating some of their design process so as to achieve efficiency within their design department. This report is the result of a study where an industrial silo is taken as an example. A design loop involving CAD design and FE analysis is built to work with an optimization routine to minimize the mass and also ensure structural stiffness and stability. Most engineers work with a lot of constraints with regard to material stock size and other design codes (e.g. Euro Codes). In this report an efficient way to design an industrial product in a 3D CAD (CATIA) program so as to stay within these constrains and still obtain credible computation results within an optimization loop will be discussed.

APA, Harvard, Vancouver, ISO, and other styles

48

Bergkvist, Marcus, and Christopher Åkerblom. "Shooting Target - Konstruktion : Product Development." Thesis, Högskolan i Halmstad, Maskinteknisk produktframtagning (MTEK), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-25899.

Full text

Abstract:

The shooting sport is one of the most widespread sports in the world and it is being practice in most countries. Based on their own experiences, in competition - and hobby shooting, the client M4Solutions found a demand and need for a shooting target that is manufactured in Sweden. The purpose of the project has been to develop, with the help of Marcus Walldén, two shooting targets from idea to finished product. These two shooting targets, Plate Rack Target and Dueling Tree, would each be equipped with a mechanical resetting system but will in the future have the ability to be provided with an electronic resetting system. The project from the client was divided into two theses. One of these two, written by Marcus Walldén, focused on the tripod parts and the overall design work for both Plate Rack Target and Dueling Tree. The thesis that is presented in this report have focused on resetting systems, the design of protective plates and other peripherals for both shooting targets. This work has primarily been in CAD environment where design, construction and development has been given free rein. Calculations, test shootings and choice of materials has been made in order to reach the best possible solutions. The thesis resulted in two complete 3D models and two full-scale prototypes of steel.

APA, Harvard, Vancouver, ISO, and other styles

49

Öhman, Oliver, and Christian Wikman. "Konstruktion av svingarm till EcoistVehicleTM." Thesis, Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-34717.

Full text

Abstract:

Den här rapporten handlar om ett maskintekniskt konstruktionsprojekt som framtagits av Christian Wikman och Oliver Öhman. Det är ett uppdrag som givits av EcoistVehicleTM för att slutföra högskoleingenjörsexamen inom maskinteknik vid Högskolan i Halmstad. Princip- och Primärkonstruktion (Olsson, 1995), Fundamentals of Vehicle Dynamics (Gillespie, 1992) och en stor mängd egen sökning har använts som grund till metoden som använts under projektets gång. EcoistVehicleTM är ett fordonsprojekt som startats av Thomas Koch. Det är en eldriven, singelsits och trehjulig bil med ett drivande bakhjul. Idén bakom bilen är att transportera föraren till sin destination på ett miljövänligt sätt. Bilen är lämpad till landsbygd och pendling med en räckvidd på 40-50km. Syftet med uppdraget som gavs våren 2017 var att hitta snabbare metoder att konstruera och tillverka en svingarm till fordonet. Uppdraget som gavs var att konstruera och möjligtvis tillverka en svingarm för det drivande bakhjulet som skall passa in på bilens dimensioner samt ha en relativt snabb tillverkningsprocess för en produktionsserie på 10-20 bilar. Uppdragsgivarens önskemål var att 3D-printa ut de större delarna av svingarmen och sedan efterbearbeta monteringsdelar och passytor med fräsning. Flera tillverkningsprocesser som används inom fordonsindustrin för framtagning av motorcykelsvingarmar har setts över och jämföras för att få fram den metod som passar detta projekt. Det som författarna bidragit med till projeketet är en högre kunskap om 3D-printning av metall, då specifikt aluminium, olika koncept för tillverkning samt analyser av konstruktionen för att testa hållfasthet till den slutgiltiga produkten.
This report will be about a mechanical design project that has been developed by Christian Wikman and Oliver Öhman. The assignment was given by EcoistVehicleTM to complete a bachelor’s degree in mechanical engineering at Halmstad University. Princip- och Primärkonstruktion (Olsson, 1995), Fundamentals of Vehicle Dynamics (Gillespie, 1992) and a large amount of research on the web has been used as the foundation for the method that’s been used all through this project. EcoistVehicleTM is a vehicle project started by Thomas Koch. It is an electrically powered, single seat, three wheeled vehicle that's driven by a single rear wheel. The idea behind the car is to transport the driver to his destination in an environmentally friendly way. The car is suited for commuting in the countryside with a range of 40-50km. The purpose of the assignment that was given in the spring of 2017 was to look into faster methods of designing and manufacturing a swingarm for the vehicle. Our assignment was to design and possibly manufacture a swingarm for the driving rear wheel that should fit the specifications of the car and have a relatively fast manufacturing process for a series of 10-20 cars. Our mentor and taskmaster has a request to 3D-print the larger parts of the swingarm then after work the mounting surfaces and mating surfaces with milling. Several manufacturing processes used in the automotive industry for the production of motorcycle swingarms will be screened and compared to get the method that will fit this project. The authors have contributed with a higher knowledge of 3D-printing, specifically aluminum, different design concepts together with analysis of the design to test the solidity of the final product.

APA, Harvard, Vancouver, ISO, and other styles

50

M, Venkata Raghu Chaitanya. "Model Based Aircraft Control System Design and Simulation." Thesis, Linköping University, Linköping University, Department of Management and Engineering, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-19264.

Full text

Abstract:

Development of modern aircraft has become more and more expensive and time consuming. In order to minimize the development cost, an improvement of the conceptual design phase is needed. The desired goal of the project is to enhance the functionality of an in house produced framework conducted at the department of machine design, consisting of parametric models representing a large variety of aircraft concepts.

The first part of the work consists of the construction of geometric aircraft control surfaces such as flaps, aileron, rudder and elevator parametrically in CATIA V5.

The second part of the work involves designing and simulating an Inverse dynamic model in Dymola software.

An Excel interface has been developed between CATIA and Dymola. Parameters can be varied in the interface as per user specification; these values are sent to CATIA or Dymola and vice versa. The constructed concept model of control surfaces has been tested for different aircraft shapes and layout. The simulation has been done in Dymola for the control surfaces.

APA, Harvard, Vancouver, ISO, and other styles

Dissertations / Theses on the topic 'CATIA'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles