Dissertations / Theses: 'Computer Aided Engineering (CAE)'

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Hoyer, Markus. "Catalogue based computer aided engineering (CAE) of process models." Thesis, University of South Wales, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.441212.

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Truong, Hai The 1962. "Management framework of automotive full service supplier in computer aided engineering (CAE)." Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/91742.

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Bedingfield, Ralph Andrew. "Development of CAE system for switched motor drive systems." Thesis, This resource online, 1991. http://scholar.lib.vt.edu/theses/available/etd-10312009-020029/.

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Robertson, Stuart Sinclair. "Towards the development of a CAE facility for integrated control systems analysis and design." Thesis, University of Strathclyde, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.366962.

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Baker, Tyson J. "Attribution Standardization for Integrated Concurrent Engineering." Diss., CLICK HERE for online access, 2005. http://contentdm.lib.byu.edu/ETD/image/etd873.pdf.

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Young, Aaron J. "An Examination of Cultures of Innovation within Esoteric Technology Provider| A Look into Computer-Aided Engineering (CAE)." Thesis, Pepperdine University, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10685521.

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The 1960’s space race in the United States gave rise to a unique culture of innovation embodied by an engineering class of professionals (Wisnioski, 2009). As knowledge workers, engineers were applying niche knowledge to solve big problems in the world (Kasdan, 1999). The result of their efforts in utilizing specific knowledge (i.e. esoteric knowledge) would become the basis for advanced development and production technology (Kasdan, 1999). One byproduct of this era is the advancement of engineering methods and computational mechanics (i.e. simulation) used to solve difficult, but semi-generalizable physics and engineering problems (Sinha, Paredis, Liang, & Khosla, 2001). However, sharing knowledge involved in engineering methods and esoteric knowledge (McMahon, Lowe, & Culley, 2004), as a whole, is difficult and a limiting factor in progressing similar large-scale, innovations (Alic, 1994). The response from organizations hoping to capitalize on developing esoteric technologies may turn to fostering a culture of innovation (Zairi and Al-Mashari, 2005). While research suggests innovation can be cultivated within an organization based on proposed frameworks and attributes (Crossan & Apaydin, 2010), an examination of lived-experiences of leaders, whose mission is to seek out the development of new esoteric technology, may provide rich insight into how cultures of innovation actually operate (Jucevi?ius, 2010). Therefore, this study proposes that a study of esoteric technology providers, beyond a contextual inquiry, may provide insights into how cultures of innovation may lead to new breakthroughs in technology and possibly an enabler to the next space race.

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Virk, Gurmej Singh. "A computer-aided learning and design system for control engineering." Thesis, University of Sheffield, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.364270.

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Söderberg, Jakob. "CAE of Gas Turbine Combustor Chamber : Improving workflow in product lifecycle management systems." Thesis, Linköpings universitet, Maskinkonstruktion, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-168687.

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This thesis seeks to improve the workflow in the product development process when using the Product Lifecycle Management (PLM) system PLM2020, incorporated at Siemens Energy. Focus is on three problem cases that emerge when working with Computer Aided Engineering (CAE) data during the development process. Apart from solving these problems, a current situation analysis was conducted, and possible solutions of these problems were investigated on how they affect the lead time in the product development process. The problems consist of exploration of an unused function and solving of two problematic situations that can occur while using PLM2020 during development work. A case study was established to investigate the problems, using participatory observations and interviews. The interviews established the current situation of Siemens work methodology to handle these situations and how PLM2020 is used. During the observations, the problems were attempted to be solved using an arbitrary Computer Aided Design (CAD) model while exploring different functions in a sandbox environment. During the interviews, it was discovered that there exist different ways of working in PLM2020 and that some approaches nullifies the benefits of using a PLM system. The participatory observations revealed that that there exist functions in the PLM system that solves the problems encountered. A set of proposed solutions are presented to Siemens

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Sintay, Stephen D. "Object Oriented CAE Software for the Exploration and Design of Microstructures." Diss., CLICK HERE for online access, 2005. http://contentdm.lib.byu.edu/ETD/image/etd1117.pdf.

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Delépine, Baudoin. "Computer-aided design (CAD) tools for bioproduction and biosensing pathway engineering." Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLE032/document.

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Les récentes avancées en biologie des systèmes et en biologie synthétique contribuent déjà au fleurissement d'applications en ingénierie métabolique visant une bioproduction renouvelable de composés chimiques. Nous pouvons entrevoir un futur où des microbes serait conçus à la carte afin de valoriser n'importe quelle source de carbone en n'importe quel composé d'intérêt. Si la route est longue avant l'accomplissement d'un tel objectif, son parcours devrait en être grandement facilité par l'exploitation de méthodes d'ingénierie déjà éprouvées dans d'autres disciplines. On s'attend entre autre à ce que l'utilisation de logiciels de Conception Assistée par Ordinateur (CAO) diminue le temps et l’expertise nécessaires à la construction de voies métaboliques n'existant pas dans la nature. La première partie de cette thèse est dédiée à notre méthode de prédiction de voies métaboliques et à ses implémentations. Nous décrivons tout particulièrement RetroPath2.0, un outil de prédiction de réseaux de réactions mettant l'accent sur les applications de rétrosynthèse, et qui est construit pour être facilement extensible par la communauté. Dans la seconde partie, nous détaillons l'intérêt des biosenseurs intracellulaires pour l'ingénierie métabolique et introduisons SensiPath; une application web qui exploite un outil de prédiction de réactions pour concevoir des circuits métaboliques permettant la biodétection de composés pour lesquels aucun biosenseur direct n'est connu. Dans l'ensemble, cette thèse propose que les outils de bioCAO devraient permettre de révéler la créativité de leurs utilisateurs et encourager l'exploration de nouvelles applications
Advances in systems and synthetic biology are fueling our ability to develop successful metabolic engineering applications for the sustainable production of bio-based chemicals. We can envision a future in which designer cells could be engineered to transform any carbon source into any target compound. This daunting task will be achieved by leveraging methods that proved themselves in other engineering disciplines. Among those, the use of Computer Aided Design(CAD) softwares is expected to reduce the amount of time and expert knowledge needed to design de novo metabolic pathways. The first part of this thesis is dedicated to our pathway prediction algorithm and its CAD implementations. Most notably, we will present RetroPath2.0, a versatile reaction network prediction framework focused on retrosynthesis that is built to be easily extensible by the community. In the second part, we will highlight the interest of intracellular biosensors for metabolic engineering and introduce SensiPath, a web application that uses a reaction prediction engine to design biosensing circuits for compounds for which no direct biosensors are known. Altogether, this thesis proposes that bioCAD tools should focus on empowering users’ creativity and encourage them to explore original applications

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Bérard, Adrien. "Method Development for Computer Aided Engineering for Aircraft Conceptual Design." Licentiate thesis, KTH, Aeronautical and Vehicle Engineering, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-9240.

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This thesis presents the work done to implement new computational tools and methods dedicated to aircraft conceptual design sizing and optimization. These tools have been exercised on different aircraft concepts in order to validate them and assess their relevance and applicability to practical cases.First, a geometry construction protocol has been developed. It is indeed essential to have a geometry description that supports the derivation of all discretizations and idealizations used by the different analysis modules (aerodynamics, weights and balance, stability and control, etc.) for which an aircraft concept is evaluated. The geometry should also be intuitive to the user, general enough to describe a wide array of morphologies and suitable for optimization. All these conditions are fulfilled by an appropriate parameterization of the geometry. In addition, a tool named CADac (Computer Aided Design aircraft) has been created in order to produce automatically a closed and consistent CAD solid model of the designs under study. The produced CAD model is easily meshable and therefore high-fidelity Computational Fluid Dynamics (CFD) computations can be performed effortlessly without need for tedious and time-consuming post-CAD geometry repair.Second, an unsteady vortex-lattice method based on TORNADO has been implemented in order to enlarge to scope of flight conditions that can be analyzed. It has been validated satisfactorily for the sudden acceleration of a flat plate as well as for the static and dynamic derivatives of the Saab 105/SK 60.Finally, a methodology has been developed to compute quickly in a semi-empirical way the buffet envelope of new aircraft geometries at the conceptual stage. The parameters that demonstrate functional sensitivity to buffet onset have been identified and their relative effect quantified. The method uses a combination of simple sweep theory and fractional change theory as well as the buffet onset of a seed aircraft or a provided generic buffet onset to estimate the buffet envelope of any target geometry. The method proves to be flexible and robust enough to predict within mainly 5% (and in any case 9%) the buffet onset for a wide variety of aircrafts, from regional turboprop to long-haul wide body or high-speed business jets.This work was done within the 6^th European framework project SimSAC (Simulating Stability And Control) whose task is to create a multidisciplinary simulation environment named CEASIOM (Computerized Environment for Aircraft Synthesis and Integrated Optimization Methods), oriented toward stability and control and specially suited for aircraft conceptual design sizing and optimization.

SimSAC

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Kwong, Kin-wa. "Computer-aided parting line and parting surface generation in mould design /." [Hong Kong : University of Hong Kong], 1992. http://sunzi.lib.hku.hk/hkuto/record.jsp?B1341804X.

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Katiyar, Kirti. "CARES - Computer Aided Rehabilitation Software." CSUSB ScholarWorks, 2005. https://scholarworks.lib.csusb.edu/etd-project/2857.

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This project was done with the vision that it would simplify and improve outpatient treatment of substance abusers through a rehabilitation software program with 24-7 access availability. By developing an easy-to-use interface for out-patient substance abuse patients, they along with their counselors, administrators and insurance agencies, will be able to facilitate continuous communication during the course of a patient's treatment.

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Yang, Yihong. "Integrated quality control planning in computer-aided manufacturing planning." Worcester, Mass. : Worcester Polytechnic Institute, 2007. http://www.wpi.edu/Pubs/ETD/Available/etd-041607-164054/.

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Thesis (Ph. D.)--Worcester Polytechnic Institute.
Keywords: In-process inspection; tolerance assignment; tolerance stack-up analysis; quality control planning. Includes bibliographical references (leaves 136-148).

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Farr, Richard. "Use of multimedia in engineering education." Thesis, University of Salford, 1999. http://usir.salford.ac.uk/34320/.

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Learning (CAL) by the computing industry, there remained a shortage of suitable titles in some subject areas, including engineering. Investigation revealed that the most significant barrier to the exploitation of multimedia technology concerned justification and payback for the substantial amount of development effort required to produce software of this kind. It was found that the size of the potential audience for a programme was all too easily limited by the exorbitant computer system requirements and limited flexibility which tended to be built into the software by default. It was aimed to investigate whether the elements of a multimedia programme which contributed greatly to its computer system requirements, cost and inflexibility were so closely linked to its educational effectiveness. The research was experimental in nature. It involved the creation of several pieces of multimedia software, this being an experiment in itself since it allowed measurement of the amount of effort required to incorporate the various media into an educational programme. Two particularly significant pieces of software are described in detail in the thesis; an advisory system meant to promote design for testability among electronic engineers, and a CAL system offering an introduction to process planning. Both of these featured, in places, a highly interactive style, involving the dynamic generation of images and animations in response to users’ input. This represented a radical departure from the conventional approach to multimedia, which was normally based upon the sequential playback of prerecorded material. The process planning software was used with groups of students; their comments were invited and their performance was measured in a test which used a novel method to identify any students who had prior knowledge of the subject. (Correct answers from such people could not reasonably be claimed to indicate that learning had taken place, but the results of the remaining students provided a more accurate sample.) Knowing how well students had performed on each question, when taught in a variety of different styles, it was possible to compare the educational effectiveness of each approach. Since the amount of time spent adding each feature and medium to the software was known, it was then possible to identify which media had been the most efficient. It was found that interactivity is the most vital single ingredient in CAL software. Experimental results clearly showed that learning was most likely to occur when the subjects were required to play an active role. Attractive, informative media such as photographs and diagrams did generally help to facilitate learning, but the effect of these was comparatively minor. The author theorises that effective computer-based education does not necessarily involve extensive use of high quality digital video and the like; rather that the means to effective computer-based learning predate the multimedia era.

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鄺建華 and Kin-wa Kwong. "Computer-aided parting line and parting surface generation in mould design." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1992. http://hub.hku.hk/bib/B31233119.

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Chhaya, Mohit Prashant. "Additive tissue manufacturing for breast reconstruction: Combining CAD/CAM with adipose tissue engineering." Thesis, Queensland University of Technology, 2015. https://eprints.qut.edu.au/84762/9/Mohit_Prashant_Chhaya_Thesis.pdf.

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The primary aim of this multidisciplinary project was to develop a new generation of breast implants. Disrupting the currently prevailing paradigm of silicone implants which permanently introduce a foreign body into mastectomy patients, highly porous implants developed as part of this PhD project are biodegradable by the body and augment the growth of natural tissue. Our technology platform leverages computer-assisted-design which allows us to manufacture fully patient-specific implants based on a personalised medicine approach. Multiple animal studies conducted in this project have shown that the polymeric implant slowly degrades within the body harmlessly while the body's own tissue forms concurrently.

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Anumba, Chinemelu Jidenka. "An integrated two and three dimensional data structure for a structural engineering CAD system." Thesis, University of Leeds, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.235665.

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Young, Jared M. "Nesting automated design modules in an interconnected framework /." Diss., CLICK HERE for online access, 2005. http://contentdm.lib.byu.edu/ETD/image/etd973.pdf.

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Čech, Vojtěch. "Vyhodnocení vlivu tvaru dýzy na tlak v dráze primárního svazku elektronů v uzavřené variantě komory diferenciálního čerpání pomocí CAE." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2011. http://www.nusl.cz/ntk/nusl-219195.

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The semestral project will focus on using Computer Aided Engineering for analysis of the ESEM differential chamber. The instruments used for the analysis, evaluation and scrutiny of the given issue will be the CAD and CAE systems (Computer Aided Design and Computer Aided Engineering).

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Grieshaber, Michele Marie. "A computer-aided software engineering toolkit for the integration of CAD/CAM application software in a network environment." Diss., Virginia Tech, 1991. http://hdl.handle.net/10919/37875.

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Much progress has been made in recent years in the development of Computer-Aided Design and Computer-Aided Manufacturing (CAD/CAM) tools for engineering design, analysis, and manufacturing. Unfortunately, most of these CAD/CAM applications were constructed independently and without standardization. In essence, they automate a single aspect of design, analysis, or manufacturing and cannot be combined to form a cohesive environment, since integration among applications was not addressed during the design phase of CAD/CAM application software creation. In view of this problem, a novel approach is suggested for software integration of applications in a network environment. The distributed integration solution described in this dissertation employs a new "integration client/server" relationship, where the integration server is the core of the system, providing functions to translate or transform data between applications. The integration client consists of an interface with the server, a CAD/CAM application, and a user interface with the integrated system called the GRIM (GRaphical Interface Manager). There is only one integration server in the system, but there may be an unlimited number of clients. The solution created for distributed integration is implemented in a Computer-Aided Software Engineering (CASE) workbench, geared specifically toward the generation of integration systems. This workbench is known as the CAD/CAM CASE Workbench, and includes an integration solution as well as standard CASE tools. The integration solution contains several tools which will aid a system designer in generating integration systems for CAD/CAM applications. Included is the distributed integration solution described in this dissertation. The distributed integration solution is designed to facilitate the semi-automatic generation of an integration system. It consists of an integration server at the center of the integration system which manages the exchange of data among the integration clients. The integration clients are the CAD/CAM applications in the context of the integration system. To use the distributed integration solution, the integration system designer will customize portions of the structure charts, data dictionary, and module specifications contained in the workbench according to the needs of the applications programs and generate C-source code defining the integration system. Using the distributed integration solution, the user will be able to effect data requests for applications, using the GRIM to interact with the system. All data exchanges are request driven. In addition to the distributed integration solution, this research includes a prototype integrated system which allows data to be requested from one application, and translated to a second for display and manipulation. The prototype was tested in a distributed environment and the results are described.
Ph. D.

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Sturnick, Gerald R. "Integration of computer-aided design techniques into the mechanical product development process /." Online version of thesis, 1989. http://hdl.handle.net/1850/10477.

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Rivera, Rosario. "An empirical study of the conceptual stage of design in mechanical engineering and its implications for CAD." Thesis, University of Wolverhampton, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.309581.

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Sivakumar, Krish. "CAD feature development and abstraction for process planning." Ohio : Ohio University, 1994. http://www.ohiolink.edu/etd/view.cgi?ohiou1180038784.

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Rust, Ciana. "Facilitating the implementation of Computer-Aided Design into the Engineering Graphics Design classroom." Diss., University of Pretoria, 2017. http://hdl.handle.net/2263/65464.

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The purpose of this study was to investigate what the EGD teacher needed in order to facilitate the successful implementation of CAD as an education tool into the EGD classroom. The researcher aimed to understand how teachers perceive CAD with regard to its usefulness and ease of use in an EGD class. The primary research question was as follows: What is needed to facilitate the implementation of CAD into the EGD classroom? The secondary research questions were: ? What are the barriers that prevent teachers from implementing CAD in their EGD classes? ? What lessons can be learnt from those schools where CAD has already been implemented? In the literature, the researcher looked at EGD as a subject presented in high school as well as the early roots of CAD. The external factors influencing the implementation of ICT in the classroom and the importance of CAD as a teaching tool were explored throughout the study. The theoretical framework used to support this study was the Technology Acceptance Model (TAM). The research approach towards this study was qualitative by nature and followed a multiple-case study design (Yin, 2003). The participants of the study were identified through a convenient-purposive sampling method. The researcher analysed data through an interpretivist point of view. The data analysis was done through the use of thematic analysis methods.
Dissertation (MEd)--University of Pretoria, 2017.
Science, Mathematics and Technology Education
MEd
Unrestricted

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Yarkinoglu, Onur. "Computer Aided Manufacturing (cam) Data Generation For Solid Freeform Fabrication." Master's thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/12608834/index.pdf.

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Rapid prototyping (RP) is a set of fabrication technologies that are used to produce accurate parts directly from computer aided drawing (CAD) data. These technologies are unique in a way that they use an additive fabrication approach in which a three dimensional (3D) object is directly produced. In this thesis study, a RP application with a modular architecture is designed and implemented to satisfy the possible requirements of future rapid prototyping studies. After a functional classification, the developed RP software is divided into View, RP and Slice Modules. In the RP module, the process parameter selection and optimal build orientation determination steps are carried out. In the Slice Module, slicing and tool path generation steps are performed. View Module is used to visualize the inputs and outputs of the RP software. To provide 3D visualization support for View Module, a fully independent, open for development, high level 3D modeling environment and graphics library called Graphics Framework is developed. The resulting RP application is benchmarked with the RP software packages in the market according to their memory usage and process time. As a result of this benchmark, it is observed that the developed RP software has presented an equivalent performance with the other commercial RP applications and has proved its success.

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Ding, Lian. "Feature technology and its applications in computer integrated manufacturing." Thesis, University of Bedfordshire, 2003. http://hdl.handle.net/10547/622150.

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Computer aided design and manufacturing (CAD/CAM) has been a focal research area for the manufacturing industry. Genuine CAD/CAM integration is necessary to make products of higher quality with lower cost and shorter lead times. Although CAD and CAM have been extensively used in industry, effective CAD/CAM integration has not been implemented. The major obstacles of CAD/CAM integration are the representation of design and process knowledge and the adaptive ability of computer aided process planning (CAPP). This research is aimed to develop a feature-based CAD/CAM integration methodology. Artificial intelligent techniques such as neural networks, heuristic algorithms, genetic algorithms and fuzzy logics are used to tackle problems. The activities considered include: 1) Component design based on a number of standard feature classes with validity check. A feature classification for machining application is defined adopting ISO 10303-STEP AP224 from a multi-viewpoint of design and manufacture. 2) Search of interacting features and identification of features relationships. A heuristic algorithm has been proposed in order to resolve interacting features. The algorithm analyses the interacting entity between each feature pair, making the process simpler and more efficient. 3) Recognition of new features formed by interacting features. A novel neural network-based technique for feature recognition has been designed, which solves the problems of ambiguity and overlaps. 4) Production of a feature based model for the component. 5) Generation of a suitable process plan covering selection of machining operations, grouping of machining operations and process sequencing. A hybrid feature-based CAPP has been developed using neural network, genetic algorithm and fuzzy evaluating techniques.

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Fang, Brian. "CAE Methods on Vibration-based Health Monitoring of Power Transmission Systems." DigitalCommons@CalPoly, 2013. https://digitalcommons.calpoly.edu/theses/1143.

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This thesis focuses on different methods to analyze power transmission systems with computer software to aid in detection of faulty or damaged systems. It is split into three sections. The first section involves utilizing finite element software to analyze gear stiffness and stresses. A quasi-static and dynamic analysis are done on two sets of fixed axis spur gears and a planetary gear system using ABAQUS to analyze the stress, strain and gear mesh stiffness variation. In the second section, the vibrational patterns produced by a simple bevel gear system are investigated by an experiment and by dynamic modeling in ADAMS. Using a Fast Fourier Transform (FFT) on the dynamic contact forces, a comprehensive frequency-domain analysis will reveal unique vibration spectra at distinct frequencies around the gear mesh frequencies, their super- and sub- harmonics, and their side-band modulations. ADAMS simulation results are then compared with the experimental results. Constraints, bearing resistant torques, and other key parameters are applied as closely as possible to real operating conditions. The third section looks closely at the dynamic contact forces of a practical two-stage planetary gear. Using the same FFT approach in the second section, a frequency-domain analysis will reveal distinct frequencies around both the first-stage and the second-stage gear mesh frequencies, and their harmonics. In addition, joint time-frequency analysis (JTFA) will be applied to damaged and undamaged planetary gear systems with transient start-up conditions to observe how the frequency contents of the contact force evolve over time.

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Silveira, Zilda de Castro. "Desenvolvimento de um sistema computacional de auxílio ao cálculo e desenho de elementos de máquinas." Universidade de São Paulo, 1999. http://www.teses.usp.br/teses/disponiveis/18/18135/tde-15012002-160339/.

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Baseado nas recentes abordagens sobre integração em Engenharia de Projeto, é proposto um sistema computacional de auxílio ao cálculo e desenho de elementos de máquinas, denominado Sistema EleMaq. O trabalho visa contribuir com a redução do ciclo de desenvolvimento do produto, além de propor uma ferramenta CAE de auxílio às disciplinas de projeto mecânico. Inicialmente foi realizada uma revisão bibliográfica, que abrangeu o ciclo de projeto tradicional, a utilização do computador em algumas de suas etapas, uma visão geral dos sistemas CAD/CAE e a abordagem atual do ciclo de desenvolvimento do produto, auxiliado por diversos recursos computacionais. O Sistema EleMaq é proposto neste contexto, como uma ferramenta CAE voltada aos elementos de máquinas. Baseou-se nas metodologias tradicionais de dimensionamento e desenho mecânico, que viabilizou a implementação dos módulos individuais de cálculo e a geração de desenhos em um sistema CAD. Em uma segunda etapa, foi desenvolvido um programa gerenciador integrado à um banco de dados e aos módulos, formando um ambiente integrado para cálculo e desenho de elementos de máquinas. Como exemplo, tomou-se o caso de redutores de velocidades.
With a market more and more demanding in terms of efficiency and costs, one has the need to integrated all the possible information of a company, helping in this way to guarantee the quality of products and services. Moreover, nowadays there are plenty of resources to systematize the repetitive and tedious tasks, such as calculating a shaft or a pair of gears. By using them, the engineer will hold all the data he/she needs and, at the same time, will have more available time for more creative tasks. With this focus, this work presents the development of a manager system for calculations of machine elements for mechanical projects. It was devised under the context of EDM-Engineering Data Management. The system is constituted of a manager program, a database and modules of calculation of machine elements. The manager program controls the flow of calculations in the project through existence and consistency rules among the mechanical elements, and also provides the availability of the input and output data. Those rules are fired through consultations to the data stored into a relational database. As consistency rule one can cite, for example, the one stating that the lubricant used in the gears calculation be the same as that used in the calculation of the bearings. The database was designed by using a logical model based on ME-R, taylored to the assembly of a specific mechanical system : a gearbox. The calculations are performed by independent computational modules which use traditional methods of elements of machines calculation (NIEMANN, 1971).

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Rangan, Ravi M. "Engineering data integration in a discrete part design and manufacturing environment." Diss., Georgia Institute of Technology, 1990. http://hdl.handle.net/1853/18837.

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Freeman, Ian James. "Computer-Aided Design Integration in Virtual Reality Design Reviews for Improved Interaction with Engineering Models." BYU ScholarsArchive, 2017. https://scholarsarchive.byu.edu/etd/6549.

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Leveraging virtual reality (VR) technology to enhance engineering design reviews has been an area of significant interest for researchers since the advent of modern VR. The ability to interact meaningfully with 3D engineering models in these VR design reviews is an important, though often neglected, capability due to the difficulty of performing data translation between native CAD data and VR compatible file formats. A bi-directional interface was developed between a VR design review environment and a commercial CAD package that streamlines the data translation process. By transmitting both geometric data and selected metadata from the CAD system an improved format for the VR model was achieved and enhanced model interaction tools were added to the VR design review application. The suite of model interaction tools developed include component hiding, exploded views, and the ability to parametrically update the model directly from the VR environment. Preliminary user experiments were performed once an early prototype of the system was in place. These experiments guided the remainder of the development and the experimental setup for the final set of experiments. Final user experiments were performed to validate the usefulness of the bi-directional interface concept and the system developed, as well as to establish the importance of enhanced model interaction in VR engineering design reviews. The experiments performed were composed of two tasks: One task aimed at exploring how CAD integration and advanced interaction tools in VR design reviews aid understanding of model geometry and design comprehension and a second task that explores how the ability to preview design changes from the VR design review environment improves decision making. In the first task participants were shown a model of a complex gearbox and asked to count the number of gears. Participants performed this test on two different models: once with the enhanced toolset and once with a baseline toolset representative of the current state of the art that only allows users to pan, rotate, and scale a shaded monochrome version of the model. In the second task participants were given a model of a four cylinder internal combustion engine and asked to determine the feasibility of three proposed design changes based on whether the changes would cause interference in the model. Again, participants performed this test with two different models, once with each toolset. The analysis of the data from these experiments showed that participants were significantly more successful at understanding the geometry of the model when using the enhanced toolset. The data also showed that the enhanced toolset often boosts users' confidence in their understanding, and can help users to understand the design more quickly. Data from the second task showed that the enhanced environment can also help users to better and more confidently understand the implications of a proposed design change, which can lead to improved decision making. The work presented here builds the foundation for the bi-directional interface concept to be extended to further applications that can enable advanced interaction with a diversity of engineering data in VR.

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Francisco, Gene R. "An occupational survey to determine the entry level CAD skills and competencies required by employers of civil engineering technicians in the Northeast Wisconsin Technical College district." Online version, 2000. http://www.uwstout.edu/lib/thesis/2000/2000franciscog.pdf.

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Patel, Paresh S. "Automatic CAD model processing for downstream applications." Diss., Mississippi State : Mississippi State University, 2005. http://sun.library.msstate.edu/ETD-db/ETD-browse/browse.

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Stručovský, Aleš. "Analýza rozložení teplotního profilu v pájecí peci pomocí systémů CAE." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2013. http://www.nusl.cz/ntk/nusl-220122.

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The aim of this project is using the CAE system to analyze the distribution of the temperature profile brazing furnace DIMA 0180. To create the model is used SolidWorks Premium 2012. The simulation is performed using the Flow Simulation. This work builds on the knowledge diploma thesis by Martin Procházka titled The effect of different heat capacities and components on the longitudinal temperature profile for reflow soldering. We start from the knowledge of heat transfer, especially of heat conduction and radiation, which appear in the furnace.

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Mei, Hong. "Knowledge-based expert support in an assembly-oriented CAD environment." Thesis, University of Hull, 2000. http://hydra.hull.ac.uk/resources/hull:13130.

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Assembly-oriented design offers great potential for product rationalisation, increasing productivity and reducing lead time and cost. It results in simpler and more reliable products which are less expensive to assemble and manufacture. To facilitate assembly-oriented design, an assembly-oriented CAD environment is needed to incorporate Design for Assembly (DFA) evaluation from an early design stage. Assembly planning should also be integrated to support the DFA evaluation. This thesis reports the results of research towards supporting such an assembly-oriented CAD environment. A novel approach has been used to deploy an Expert Assembler to support proactive DFA evaluation and assembly sequence definition. This is particularly useful, as designers are rarely if ever assembly experts. Based on the fact that there are several areas needing expert support in this assembly-oriented CAD environment, but that different areas have very different requirements and different knowledge is involved, the Expert Assembler deployed contains several separated modules. Each module is an expert agent devised to tackle a problem area that uses a suitable problem solving strategy, knowledge representation and reasoning method. This brings a number of advantages that are detailed in the thesis. The thesis presents systematical ideas for support proactive DFA, with the focus on support for part count reduction and assembly sequence generation. This is realised by three elements of the expert agents: Part Count Advisor, Starting Part Advisor, and Next Part Advisor. Part count reduction is usually based on dialogue with the user. There is little computational support for this issue in any of the DFA methodologies and related literature. This research fills the gap: it brings computational support for part count reduction from the early design stage. The work has also made new progress in assembly sequence generation. The Starting Part Advisor and the Next Part Advisor cooperate with each other and with the user to provide suggestions dynamically and transparently regarding base part and the most suitable next part selection in assembly sequence definition. Case studies were used to test the effectiveness of the Advisors.

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King, Matthew Lee. "A CAD-centric Approach to CFD Analysis With Discrete Features." Diss., CLICK HERE for online access, 2004. http://contentdm.lib.byu.edu/ETD/image/etd570.pdf.

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Eves, Keenan Louis. "A Comparative Analysis of Computer-Aided Collaborative Design Tools and Methods." BYU ScholarsArchive, 2018. https://scholarsarchive.byu.edu/etd/7253.

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Collaboration has always been critical to the success of new product development teams, and the advent of geographically dispersed teams has significantly altered the way that team members interact. Multi-user computer-aided design (MUCAD) and crowdsourcing are two results of efforts to enable collaboration between geographically dispersed individuals. In this research, a study was done to investigate the differences in performance between MUCAD and single-user CAD teams, in which teams competed to create the best model of a hand drill. This was done across a three-day period to recreate the scenario found in industry. It was found that MUCAD increases awareness of teammates' activities and increases communication between team members. Different sources of frustration for single-user and multi-user teams were identified, as well as differing patterns of modeling style. These findings demonstrate that MUCAD software has significant potential to improve team collaboration and performance. A second study explored a number of potentially significant factors in MUCAD team performance, including leadership, design style, unfamiliar parts, knowledge transfer, individual experience, and team composition. In this study, teams of undergraduate mechanical engineering students worked together to complete tasks using NXConnect, a MUCAD plugin for NX developed at Brigham Young University. A primary finding was that having an appointed leader for a MUCAD team improves performance, in particular when that leader works with the team in creating the CAD model. It was also found that creating a framework to aid in organizing and coordinating the creation of the CAD model may decrease the time required for completion. In the final study, the possibility of using crowdsourcing to complete complex product design tasks was explored. In this study, a process for crowdsourcing complex product design tasks was developed, as well as a website to act as the platform for testing this process. A crowd consisting of engineering and technology students then worked together on the website to design a frisbee tracking device. The crowd was able to collaborate to accomplish some detailed product design tasks, but was not able to develop a complete product. Major findings include the need for more formal leadership and crowd organization, the need for better decision making mechanisms, and the need for a better model for engaging crowd members on a consistent basis. It was also found that crowd members had a greater willingness to pay for the product they developed than individuals who had not worked on the project. Results also show that although crowd members were often frustrated with the collaboration process, they enjoyed being able to work with a large group of people on a complex project.

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Chiu, Wai-kei, and 趙偉奇. "Hollowing and reinforcing 3D CAD models and representing multiple material objects for rapid prototyping." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2000. http://hub.hku.hk/bib/B29768470.

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Chiu, Wai-kei. "Hollowing and reinforcing 3D CAD models and representing multiple material objects for rapid prototyping /." Hong Kong : University of Hong Kong, 2000. http://sunzi.lib.hku.hk/hkuto/record.jsp?B22050498.

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Currie, Wendy. "Engineering managements perceptions of the selection and implementation of computer-aided design in twenty selected companies/units." Thesis, Brunel University, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.384106.

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Cournoyer, Richard John. "The Application of Parametric Software into the Undergraduate Computer-Aided Manufacturing Environment." Digital WPI, 1999. https://digitalcommons.wpi.edu/etd-theses/1078.

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"This thesis presents an in depth study of Pro/Engineer's manufacturing module and its application into the Computer-Aided Manufacturing (CAM) undergraduate education environment. Mechanical Engineering has a lot to gain by incorporating computers into the undergraduate curriculum in comparison to only the traditional classroom surroundings. Today, complex problems can be solved in mere seconds thanks to the power and speed of current computers. Likewise within today's manufacturing sector, numerical controlled (NC) machines are no longer programmed manually. In today's globally competitive manufacturing environment, integrated systems such as CAD/CAM help reduce the ever-shrinking time to market. This thesis contains the background as well as the curriculum material necessary to teach undergraduate students CAM using Pro/Engineer's manufacturing module. The curriculum material starts with the tutorials to teach and reinforce Pro/Engineer basic sketcher skills, which are necessary background information. Followed with in-depth click tutorials to teach the manufacturing module for 2 axes turning, and 3 axes hole drilling and milling. It also includes the necessary lab manuals that reinforce the class lecture material, an electronic manufacturing exam, and the students' evaluations from 2 terms when the CAM course (ME3820) was offered."

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Kim, Young Min. "A two-dimensional charge control model and an analytic CAD model for MODFETs /." The Ohio State University, 1987. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487322984315963.

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Farhan, Uday H. "An integrated computer-aided modular fixture design system for machining semi-circular parts." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2013. https://ro.ecu.edu.au/theses/555.

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Productivity is one of the most important factors in manufacturing processes because of the high level of market competition. In this regard, modular fixtures (MFs) play an important role in practically improving productivity in flexible manufacturing systems (FMSs) due to this technology using highly productive computer numerical control (CNC) machines. MFs consist of devices called jigs and fixtures for accurately holding the workpiece during different machining operations. The design process is complex, and traditional methods of MF design were not sufficiently productive. Computer-aided design (CAD) software has rapidly improved as a result of the development of computer technology, and has provided huge opportunities for modular fixture designers to use its 3D modelling capabilities to develop more automated systems. Computer-aided fixture design (CAFD) systems have become automated by the use of artificial intelligence (AI) technology. This study will investigate the further improvement of automated CAFD systems by using AI tools. In this research, an integrated CAFD is developed by considering four main requirements: · a 3D model of the workpiece, · an expert system, · assembly automation of MFs, · an efficient feature library. The 3D model is an important factor that can provide the appropriate specification of the workpiece; SolidWorks is used the CAD environment for undertaking the 3D modelling in this study. The expert system is applied as a tool to make right decisions about the CAFD planning process, including locating and clamping methods and their related element selection. This helps achieve a feasible fixture design layout. SolidWorks API and Visual Basic programming language are employed for the automating and simulation of the assembly process of MFs. A feature library of modular fixture elements is constructed as a means to simplify the fixture design process.

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Dariotis, Dimitris. "A CAD model for the axial inductive strip with finite thickness centered in homogeneous finline with w/b=1." Monterey, California : Naval Postgraduate School, 1990. http://handle.dtic.mil/100.2/ADA243553.

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Thesis (M.S. in Electrical Engineering)--Naval Postgraduate School, December 1990.
Thesis Advisor(s): Knorr, Jeffrey B. Second Reader: Janaswamy, Ramakrishna. "December 1990." Description based on title screen as viewed on March 29, 2010. DTIC Identifier(s): Homogeneous Finlines, Inductive Strips, Computer Aided Design, Reactangular Waveguides, Thesis. Includes bibliographical references (p. 79-80). Also available in print.

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Olsson, Adam, and Anders Rask. "Simulation of CamDrum for Shock Absorbers." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-263860.

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Simulation can play an important role when aiming to streamline extensive and time-consuming tests. It has the potential to save time, money and energy. One of the testing methods used to test shock absorbers (SA), is accelerated life testing using a rolling road, CamDrum. It is therefore of great interest to examine the possibilities to streamline this testing method. This master thesis is conducted in co-operation with Öhlins Racing AB and the Machine Design department at KTH. The thesis project aims to look into the following: How can the use of simulation software aid in streamlining the test sequence used for shock absorbers in CamDrum? What limitations is there when simulating the CamDrum method using the selected simulation software? The goal was to develop an adequate model according to specified requirements, to facilitate early testing of new ideas and parameter changes. The delimitations includes, that the project only focuses the test-rig for MTB shock absorbers, the parts of the test-rig are assumed to be rigid and the simulation of the shock absorber is out of scope, since the aim of this thesis is to simulate the test-rig. To succeed with the project, a background research was conducted to gain knowledge about shock absorbers, test method and equipment, dynamics and useful software. The simulation model was verified against data obtained from tests. The tests were performed using the CamDrum with two different MTB shock absorbers and a stiff rod. The aim was to log and verify the change in position for the test-rig, shock absorbers and wheel. In addition the forces acting on the shock absorbers was investigated using strain gauges attached to the test-rig. The mean deviation in % for configuration 70-30-30 [mm] bump: SA MTBM1899, A4: 11.6% - 23.2%. SA MTB1691, A4: 15.8% - 28.1%. Stiff rod, A3: 0.9% - 4.9%, A5: 2.0% - 5.1%. SA Force, 16.1% - 24.0%. The deviation between the simulation and the test environment increases with the velocity. The use of stiff rod verifies the model against the CamDrum regarding the displacement. The resulting force from the use of strain gauges verifies the simulation models force regarding the shape. The Amesim model has the potential to be of great aid when designing tests.
Simulering kan vara en väg till att effektivisera tidskrävande och omfattande tester. Det finns potential att spara såväl energi som tid och pengar. En av metoderna för att testa stötdämpare är rullande landsväg, CamDrum. Det är därför intressant att undersöka hur den processen kan effektiviseras. Examensarbetet utförs i samarbete mellan Öhlins Racing AB och institutionen för Maskinkonstruktion på KTH. Det här examensarbetet avser att undersöka följande: Hur kan användandet av simuleringsprogram underlätta effektivisering av testmetoden som används för stötdämpare i CamDrum? Vilka avgränsningar finns vid användande av simulering för CamDrum-metoden med valt simuleringsprogram? Målet var att utveckla en modell som uppfyller givna krav och underlättar vid initieringsfasen för utveckling av tester för CamDrum. Projektets avgränsningar innebär att enbart riggen för MTBstötdämpare undersöks, alla ingående komponenter i testriggen antas styva och dämparmodellen som utvecklats är förenklad då målet är att simulera riggen för dämparen. För att lyckas med uppgiften har en förstudie genomförts för att samla nödvändig kunskap om stötdämpare, dynamik, testmetoden och lämplig mjukvara. Simuleringsmodellen verifieras mot data hämtat från utförda tester. Testerna utfördes i CamDrum med två olika MTB-stötdämpare och en rundstång med mål att logga och verifiera rörelser för riggen, stötdämpare och hjulet. Vidare har krafterna på stötdämparen undersökts med hjälp av trådtöjningsgivare monterade på testriggen. Medelavvikelsen i % för guppkonfigurationen 70-30-30 [mm]: SA MTBM1899, A4: 11.6% - 23.2%. SA MTB1691, A4: 15.8% - 28.1%. Rundstång, A3: 0.9% - 4.9%, A5: 2.0% - 5.1%. SA Force, 16.1% - 24.0%. Avvikelsen mellan simuleringen och testerna ökar med hastigheten. Användandet av rundstången verifierar modellen gentemot CamDrum med avseende på positionsförändring. Den resulterande kraften från användandet av trådtöjningsgivare verifierar simuleringsmodellen med avseende på form. Amesim-modellen har en möjlighet att underlätta vid framtagning av tester.

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呂俊強 and Chun-keung Pierre Lui. "Surface irregularity models in CAD applications: surface finish and tolerance allocation." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1988. http://hub.hku.hk/bib/B31239067.

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Lui, Chun-keung Pierre. "Surface irregularity models in CAD applications : surface finish and tolerance allocation /." Hong Kong : University of Hong Kong, 1988. http://sunzi.lib.hku.hk/hkuto/record.jsp?B19952697.

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Vij, Lokesh. "Computer aided modeling of proteins and prediction of their 3-D structure using neural networks." Ohio : Ohio University, 1993. http://www.ohiolink.edu/etd/view.cgi?ohiou1176312284.

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Siu, Yan-kit, and 邵仁傑. "Modelling and prototyping of heterogeneous solid CAD models." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2003. http://hub.hku.hk/bib/B31245924.

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Scott, Nathan W. "High-level, Product Type-specific Programmatic Operations for Streamlining Associative Computer-aided Design." Diss., CLICK HERE for online access, 2008. http://contentdm.lib.byu.edu/ETD/image/etd2601.pdf.

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Dissertations / Theses on the topic 'Computer Aided Engineering (CAE)'

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