Relevant bibliographies by topics / Deformationer

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Deformationer'

Author: Grafiati
Published: 4 June 2021
Last updated: 12 February 2022

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Journal articles on the topic "Deformationer"

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Piras, Paolo, Valerio Varano, Maxime Louis, Antonio Profico, Stanley Durrleman, Benjamin Charlier, Franco Milicchio, and Luciano Teresi. "Transporting Deformations of Face Emotions in the Shape Spaces: A Comparison of Different Approaches." Journal of Mathematical Imaging and Vision 63, no. 7 (May 18, 2021): 875–93. http://dx.doi.org/10.1007/s10851-021-01030-6.

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AbstractStudying the changes of shape is a common concern in many scientific fields. We address here two problems: (1) quantifying the deformation between two given shapes and (2) transporting this deformation to morph a third shape. These operations can be done with or without point correspondence, depending on the availability of a surface matching algorithm, and on the type of mathematical procedure adopted. In computer vision, the re-targeting of emotions mapped on faces is a common application. We contrast here four different methods used for transporting the deformation toward a target once it was estimated upon the matching of two shapes. These methods come from very different fields such as computational anatomy, computer vision and biology. We used the large diffeomorphic deformation metric mapping and thin plate spline, in order to estimate deformations in a deformational trajectory of a human face experiencing different emotions. Then we use naive transport (NT), linear shift (LS), direct transport (DT) and fanning scheme (FS) to transport the estimated deformations toward four alien faces constituted by 240 homologous points and identifying a triangulation structure of 416 triangles. We used both local and global criteria for evaluating the performance of the 4 methods, e.g., the maintenance of the original deformation. We found DT, LS and FS very effective in recovering the original deformation while NT fails under several aspects in transporting the shape change. As the best method may differ depending on the application, we recommend carefully testing different methods in order to choose the best one for any specific application.
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Chu, Bin-Lin, Yeun-Wen Jou, and Meng-Chia Weng. "A constitutive model for gravelly soils considering shear-induced volumetric deformation." Canadian Geotechnical Journal 47, no. 6 (June 2010): 662–73. http://dx.doi.org/10.1139/t09-135.

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This study elucidates the deformational behavior of gravelly soils by analyzing how hydrostatic pressure and pure shearing affect deformational behavior. A series of drained, triaxial compression tests have been performed using large specimens made of gravelly soils, where the grain-size distribution curve was based on the field condition. The volumetric and shear deformations of gravelly soils have been determined by performing experiments with controlled stress paths — hydrostatic pressure was applied first followed by pure shearing. A simple and innovative constitutive model is also proposed. The proposed model is characterized by the following features of gravelly soils: (i) significant shear-induced volumetric deformation prior to failure, (ii) modulus stiffening under hydrostatic loading and degradation under shearing, and (iii) stress-induced anisotropy. In the proposed model, deformational moduli K and G vary according to the stress state. The stiffening and degradation of these moduli result in diverse deformational behavior of gravelly soils. In addition, an anisotropic factor, β, is introduced to represent stress-induced anisotropy. Moreover, the proposed model only requires eight material parameters; each of which can be obtained easily from experiments.
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VON GOSEN, W. "Stages of Late Palaeozoic deformation and intrusive activity in the western part of the North Patagonian Massif (southern Argentina) and their geotectonic implications." Geological Magazine 146, no. 1 (July 30, 2008): 48–71. http://dx.doi.org/10.1017/s0016756808005311.

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AbstractAnalyses of structures in the western part of the North Patagonian Massif (southern Argentina) suggest a polyphase evolution, accompanied by continuous intrusive activity. The first two deformations (D1, D2) and metamorphism affected the upper Palaeozoic, partly possibly older Cushamen Formation clastic succession and different intrusive rocks. A second group of intrusions, emplaced after the second deformational episode (D2), in many places contain angular xenoliths of the foliated country rocks, indicating high intrusive levels with brittle fracturing of the crust. Deformation of these magmatic rocks presumably began during (the final stage of) cooling and continued under solid-state conditions. It probably coincided with the third deformational event (D3) in the country rocks. Based on published U–Pb zircon ages of deformed granitoids, the D2-deformation and younger event along with the regional metamorphism are likely to be Permian in age. An onset of the deformational and magmatic history during Carboniferous times, however, cannot be excluded. The estimated ~W–E to NE–SW compression during the D2-deformation, also affecting the first group of intrusive rocks, can be related to subduction beneath the western Patagonia margin or an advanced stage of collisional tectonics within extra-Andean Patagonia. The younger ~N–S to NE–SW compression might have been an effect of oblique subduction in the west and/or continuing collision-related deformation. As a cause for its deviating orientation, younger block rotations during strike-slip faulting cannot be excluded. The previous D2-event presumably also had an effect on compression at the northern Patagonia margin that was interpreted as result of Patagonia's late Palaeozoic collision with the southwestern Gondwana margin. With the recently proposed Carboniferous subduction and collision south of the North Patagonian Massif, the entire scenario might suggest that Patagonia consists of two different pieces that were amalgamated with southwestern Gondwana during Late Palaeozoic times.
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Barkov, L. A., Marina N. Samodurova, and O. A. Nevraeva. "Kinematic and Dynamic Conditions in Metal Rolling of Porous Materials." Materials Science Forum 989 (May 2020): 705–10. http://dx.doi.org/10.4028/www.scientific.net/msf.989.705.

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Mathematical modeling of plastic deformations in rolling consists in a consequent combination of the general energetic relationship in plasticity and the variation inequality expressed the principle of minimum of entire deformation energy. A real deformation state in a plastic zone beneath rolls and corresponding kinematic and dynamics conditions on the contact surface are considered as a limited one for the consequent approximate deformation states and are found out by the method of approximated approach. Any realization of this method on personal computers requires a rational construction of a kinematic-possible velocity field in the spatial domain on plastic flow. Using the ordinary propositions and a new assumptions the authors have constructed a simple kinematic-possible velocity field in the plastic zone beneath rolls. On the base of the consequent approach in which the general energetic relationship and the variation inequality are interrelated the authors have been able to find out the geometric, kinematic and dynamics characteristics of plastic deformation’s states in metal rolling.
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Aleksandrov, A. S., T. V. Semenova, and N. P. Aleksandrova. "MATERIALS USED IN THE ROAD BASES: METHOD OF THE RESIDUAL DEFORMATIONS’ CALCULATION." Russian Automobile and Highway Industry Journal 16, no. 4 (September 8, 2019): 456–71. http://dx.doi.org/10.26518/2071-7296-2019-4-456-471.

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Materials and methods. The authors performed the analysis of the models for calculating residual deformations accumulated by granular materials and under the influence of repeated loads. The research showed the hereditary nature of the strain granular materials’ accumulation. Therefore, the authors used integral calculus for analytical solution of the residual deformation’s dependence on the number of repeated loads and on the magnitude of the main stresses. Moreover, the authors obtained the solution in the form of logarithmic and power functions, which associated the accumulated deformation with the deformation arising from the first load application. In determining the deformation from the first load application, the authors took into account the model of the theory of plasticity, in which the elastoplastic deformation was determined by the sum of two components elastic and plastic, as well as rheological models considering the deformation as the sum of three or four components. Generalizing the model for various materials, the authors gave the preference to the model, in which the elastoplastic deformation was determined by four components: instantaneous elastic and residual deformations, elastic (elastic-viscous) deformation and a viscoplastic component. Therefore, the residual strain from the first load application was represented by the sum of the two components, instantaneous irreversible and viscoplastic. The viscoplastic component of the deformation was a result of stress relaxation in a relatively short period of time equal to the duration of the load impact. Such research allowed taking into account the effect of speed on the duration of the load and the magnitude of the viscoplastic component of the residual deformation. The authors emphasized that taking into account the viscous-plastic component of residual deformation was most appropriate when calculating residual deformations of soils and materials treated with an organic binder. Granular materials were less sensitive to viscoplastic deformation under a single load application, but, when the voltage exceeded the elastic limit, and the more plastic adaptability of crushed stone, gravel, etc. viscoplastic deformation made a significant contribution to the accumulated residual deformation.Results. As a result, the authors carried out the analysis of experimental data on the triaxial compression of various granular materials and determined the parameters obtained for the power and logarithmic functions. The authors studied such materials as granite, gneissic, granodiorite and diorite crushed stone, sand, gravel and crushed stone, gravel mixtures with a mineral part from various rocks and fortified sands.Discussion and conclusions. The paper demonstrates the possibility of using the solutions for calculation of the surface displacement of the pavement layers of granular materials. The authors formulate the tasks for further research.
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Wiśniewski, Zbigniew, and Waldemar Kamiński. "Estimation and Prediction of Vertical Deformations of Random Surfaces, Applying the Total Least Squares Collocation Method." Sensors 20, no. 14 (July 14, 2020): 3913. http://dx.doi.org/10.3390/s20143913.

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This paper proposes a method for determining the vertical deformations treated as random fields. It is assumed that the monitored surfaces are subject not only to deterministic deformations, but also to random fluctuations. Furthermore, the existence of random noise coming from surface’s vibrations is also assumed. Such noise disturbs the deformation’s functional models. Surface monitoring with the use of the geodetic levelling network of a free control network class is carried out. Assuming that, in some cases, the control networks are insufficient in surface’s deformation analysis, additional and non–measurable reference points have been provided. The prediction of these points’ displacements and estimation of the free control network points’ displacement are carried out using the collocation method applying the total least squares adjustment. The proposed theoretical solutions were verified by the simulation methods and on the example of a real control network.
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Lazarus, Francis, Sabine Coquillart, and Pierre Jancène. "Axial deformations: an intuitive deformation technique." Computer-Aided Design 26, no. 8 (August 1994): 607–13. http://dx.doi.org/10.1016/0010-4485(94)90103-1.

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Коновалова and Valyeriya Konovalova. "Causes of Occurence and the Consequences of the Professional Deformations." Management of the Personnel and Intellectual Resources in Russia 5, no. 1 (February 17, 2016): 6–10. http://dx.doi.org/10.12737/18374.

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The article considers the essence and the reasons for the formation of professional deformation in various fields of activities, identifies the levels of their manifestations, including: general professional deformations, special professional deformations, professional typological deformations, individualized deformations. The main implications of professional deformation, seriously affecting the professional development and effectiveness are analized, including: disintegration of professional development, distorted development professional, low professional mobility, increased deformation of the personality, etc. Psychological determinants of the personality, contributing to the professional deformation are allocated. Special attention is paid to the peculiarities of professional deformation of leaders: distinguished features, including gender, professional deformation managers; the factors that determine the risk of burnout of managers as a non-specific professional deformation are summarized, including basic personality traits, models of overcoming behavior in difficult or critical situations, the style of behavior in conflict situations, managerial skills.
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Erdélyi, Ján, Alojz Kopáčik, Ľubica Ilkovičová, Imrich Lipták, and Pavol Kajánek. "Monitoring of a concrete roof using terrestrial laser scanning." Geoinformatics FCE CTU 13 (December 21, 2014): 25–30. http://dx.doi.org/10.14311/gi.13.3.

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The paper deals with the geodetic monitoring of a parabolic shaped reinforced con-crete roof structure in the chemical company Duslo, Ltd. in Šaľa (Slovak Republic).The monitored structure is a part of the roof of a warehouse used for the storage offertilizer. The atmospheric conditions and the operation load caused deformationof the construction. For measurement was used the technology of terrestrial laserscanning. The displacements of the observed parts of the construction were cal-culated using planar surfaces by the procedure of Singular Value Decomposition ofmatrixes. The procedure of initial and 2 epochal measurements of deformations,the procedure of the data processing, and the results of the deformation monitoringare described.
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Fan, Jinyan, Zhibiao Guo, Xiaobing Qiao, Zhigang Tao, Fengnian Wang, and Chunshun Zhang. "Constant Resistance and Yielding Support Technology for Large Deformations of Surrounding Rocks in the Minxian Tunnel." Advances in Civil Engineering 2020 (September 28, 2020): 1–13. http://dx.doi.org/10.1155/2020/8850686.

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During the excavation of the Minxian tunnel, problems of large deformations of surrounding rocks and failure of support structures appeared frequently, which caused serious influences on construction safety and costs of the tunnel. Based on laboratory analysis of mineral composition and field investigations on deformation characteristics of the surrounding rocks, the large deformation mechanism of surrounding rocks of the tunnel was considered as water-absorbing swelling molecules of carbonaceous slate and stress-induced asymmetric structural deformations of the surrounding rocks. The structural deformations of surrounding rocks mainly include bending deformation, interlayer sliding, and crushing failure of local rock blocks. Then, a new constant resistance and yielding support technology based on the constant resistance and large deformation (CRLD) anchor cable was proposed to control large deformations of surrounding rocks. The field tests and deformation monitoring were carried out. The monitoring results showed that compared with original support measure, the surrounding rock deformations, stresses of primary supports, and permanent lining using new support technology decreased greatly. Among them, the maximum deformation of surrounding rock was only 73 mm. The effects of field application and results of deformation monitoring showed that the new support technology can effectively control large deformations of the surrounding rocks in the Minxian tunnel.
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Dissertations / Theses on the topic "Deformationer"

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Hvit, Erik. "Vertikala deformationer." Thesis, Mittuniversitetet, Avdelningen för ekoteknik och hållbart byggande, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-40173.

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Eurokoderna som tillsammans med EKS (Boverkets konstruktionsregler), utgör svenska normer för verifiering av bärförmåga, stadga och beständighet kan ibland vara svåra och tidsödande att tolka och tillämpa i konstruktionsarbetet. I bruksgränstillstånd finns oftast inte krav kvantifierade i eurokoden utan det är byggherrens eller konstruktörens ansvar att formulera dimensioneringskriterier för till exempel deformationer. Denna brist på tydliga krav och definitioner gör det svårt att få en samlad bild och tolkningar och kriterier tenderar till att bli individuella. Hur deformationsgränser och lastfall tolkas och tillämpas påverkar hur byggnadsdelar dimensioneras och utformas och därmed även materialåtgång, kostnad och miljö.   Den här studien är gjord för att effektivisera hur AFRY arbetar med eurokoderna med avseende på bruksgränstillstånd och framför allt vertikala stomdeformationer. Studien visar även hur materialanvändningen påverkas av olika deformationskriterier och lastfall. För att kunna visa detta har några vanligt förekommande konstruktionslösningar studerats.   Det som framkommit är att frånvarandet av deformationsgränser i de svenska eurokoderna är en brist som borde åtgärdas och kanske borde vi göra som andra länder som har med deformationsgränser i den generella delen av eurokoden. Eurokoderna kan även vara krångliga att läsa, och det är lätt att tappa helhetsbilden när informationen som eftersöks finns i olika stycken och eurokoder.   Det har även framkommit att materialåtgången kan vara så stor som 66 procent beroende av hur eurokoderna tolkas och vilka deformationskrav som används. Det är dock en siffra som kan ha stora variationer beroende på konstruktionslösning och material, men resultatet ger dock en fingervisning på hur det kan se ut.
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Larsson, Peter, and Sundén Fredrik Nilsson. "Konstruktionslösningar och deformationer i tre Östgötska medeltida sockenkyrkor." Thesis, Linköping University, Department of Science and Technology, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-2569.

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The purpose with this report is to illuminate the construction solutions and the deformations that could exist in medieval parish stone churches. But also to increase the writers understanding how activity forces effect the construction of the churches. With help from literature and a practical study, containing three churches the writers have collected the material that the conclusions and discussions are built upon in this report.

The construction of the churches consists of three parts, the wall, the roof and the vault. The construction solutions are similar in the churches disregard of the roof, where the roof trusses are different. The roof trusses are yet typical for the roman style. The deformations that have been found can in most cases be could usual occurring in these old churches the writers chosen to study, the needs to repairmen are today not necessary. Yet the writers think that there are deformations that should be study more thorough, to derive the origin and take suitable measure. The writers think that the deformations that effect the constructions have most of their origin in some rebuilding and lost knowledge of old building engineering.

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Bredin, Johan, and Kim Majholm. "Utvärdering av multistation Leica MS50 för detektering av deformationer." Thesis, Högskolan i Gävle, Avdelningen för Industriell utveckling, IT och Samhällsbyggnad, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-17187.

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Deformationsövervakning har en betydande roll i samhället idag. Genom att studera och förutse deformationer har problemen kring konstruktion av dammar, broar och tunnlar kunnat hållas nere. Utan en fungerande deformationsövervakning kan såväl industrier som människor påverkas negativt. Deformationer i gruvor kan leda till stopp i produktionen medan deformationer i byggnader utgör en risk för människans säkerhet. För att förhindra dessa följder är det viktigt att analysera och övervaka deformationer med lämpligast mätningsmetod. Punktmolnsinsamling för deformationsövervakning utförs i huvudsak med markburna laserskannrar. Ett nytt instrument har dock nyligen kommit ut på marknaden, multistationen Leica MS50, som har möjlighet att skanna in hela punktmoln på liknande sätt som markburna laserskannrar.   I denna studie har deformationsmätningar utförts för att visa den minsta detekterbara rörelse som kan upptäckas med multistationen Leica MS50. Studien behandlar även hur olika upplösningar påverkar skanningstiden och skanningsfrekvensen samt om materialet som skannats har någon inverkan vid detektering av deformationer. I studien användes Leica MS50 i tre olika moment för att skanna punktmoln i flera olika upplösningar för deformationsmätningar. I de olika momenten skannades plastmaterial av olika tjocklekar och optiska egenskaper för att simulera deformation. För att analysera punktmolnen användes mjukvaruprogrammet Geomagic Control. Analysen utfördes genom att skapa en mesh av referensytan och mäta avstånden från deformerade objekt till den nämnda meshen.   Resultaten som erhölls visar tydligt hur deformationer på 2,1 mm kan upptäckas i djupled. Vidare kunde det konstanteras att skanningsmaterialets egenskaper har en stor påverkan vid avståndsmätningar. Det gick att se ett tydligt samband mellan tjocklek på material och avståndsfel i de fall där reflekterande transparenta plastmaterial användes. I denna studie kunde samtliga icke-transparenta deformationsobjekt detekteras vid mätning med alla upplösningar. Därmed kan slutsatsen dras att den lägsta upplösningen (15 × 15 mm) är den mest fördelaktiga i denna studie p.g.a. den korta skanningstiden. Det kunde även fastställas att punktupplösningen hade en direkt inverkan på skanningsfrekvensen, ju lägre upplösning desto lägre frekvens.
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Tallberg, Mattias, and Rikard Wanneros. "Studie av tillverkning och beräkning av deformationer i hydrocyklonaggregatet RADICLONE." Thesis, Linköping University, Department of Mechanical Engineering, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-2851.

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I hydrocyklonaggregatet RADICLONE används kragade hål som tätningsyta mot cyklonen. Hålen ändrar form under tillverkning och i drift med läckage som följd.

Syftet med arbetet är att studera hur de kragade hålen deformeras vid tillverkning och med hjälp av en FEM-modell beräkna deformationer vid drift och tillverkning. Utifrån resultaten har åtgärder föreslagits för att reducera hålens ovalitet.

Det som påverkar hålen mest vid tillverkning är kragning och svetsning av bajonettfästen. Enskilt största påverkan sker vid svetsning av ledplåten.

FEM-analysen vid drift visar att deformationerna varierar över mantlarna och att de högsta spänningarna ligger som ringar kring mantlarna så att kragarna får ta upp en stor del av dessa.

För att komma till rätta med dessa problem har ett antal produktions- och konstruktionsförändringar föreslagits:

- Använda ovala dragringar vid kragning av hålen

- Flytta ledplåtens infästning från manteln till bottengaveln

- Sära på hålen - Använda tjockare plåt i mantel 2

- Förbättra cyklonens tätningsytor mot kragarna på mantel 2 och 3

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Sjöli, Erik. "Vertikala deformationer av sulan hos ytligt belägna bergkonstruktioner i hårt berg." Thesis, Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-83261.

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Ytliga bergkonstruktioner blir allt mer vanligt i samhället för att tillgodose alternativa lösningar på infrastruktur vilket möjliggör förtätning vid markytan. Spänningssituationen nära markytan kan vara mycket komplicerad vilket ger upphov till att både strukturella och spänningsinducerade brott kan förekomma i bergkonstruktioner på grunda djup i Skandinavisk berggrund.  I examensarbetet har det mekaniska beteende som leder till vertikala deformationer av sulan hos en ytligt belägen bergkonstruktion i hårt berg studerats med hjälp av det finita elementprogrammet RS2. Bergkonstruktionen som har studerats i den finita elementmodellen är ett bergrum med en spännvidd på 20 meter och den totala höjden är 15 meter. I studien utreds hur den primära spänningssituationen, bergmassans egenskaper och spännvidden av bergrummet påverkar de vertikala deformationerna.  Det förväntade deformationsbeteende som orsakas av respektive nyckelparameter beskrivs med hjälp av en konceptuell modell. Materialparametrarna för den finita elementmodellering är antagna utifrån tillhandahållen fält- och laboratoriedata. För att skilja på vad som händer om bergmassan i sulan går till brott eller inte används en linjärelastisk materialmodell och en elastisk-spröd materialmodell med Hoek \& Browns brottvillkor. Residualparametrarna vid den elastiska-spröda materialmodellen bestäms genom att reducera bergmassans GSI-värde. Vidare har en känslighetsstudie genomförts med avseende på nyckelparametrarna, initiala bergspänningar, spännvidd och bergmassans egenskaper - vilka är det intakta bergets enaxiella tryckhållfasthet $\sigma_{ci}$ och GSI-värdet. Känslighetsstudien resultat visar på att bergmassans GSI-värdet av är den faktorn som påverkar storleken av de vertikala deformationerna mest. Resultatet av modelleringen visar även att om brott uppstår i bergrummets sula initieras brottet i en avlastad zon nära bergrummets vägg och utvecklas därefter progressivt till en sammanvuxen brottzon i bergmassan under sulan. Vid brott ökar de storleken på de vertikala deformationerna mycket, där ett lågt GSI-värde och höga horisontella spänningar kan leda till relativt stora magnituder av deformationer. Resultatet visar även på att ett område av bergmassan under bergrummets sula utsätts för vertikala deformationerna. Storleken på deformationerna är som största nära sulan och avtar sedan med djupet, vilket ger upphov till deformationsdifferenser och i sin tur töjningar i bergmassan. För den elastiska materialresponsen blir utbredningen av området som utsätts för de vertikala deformationerna betydligt större än om bergmassan går till brott. Däremot utsätts det plasticerade området för betydligt större deformationsdifferenser då den vertikala deformationsavtagningen endast sker inom den plasticerade området.
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Johansson, Teddy. "Frysning av jord och berg vid tunnelbyggande : studier av deformationer och spänningar, etapp 1 /." Stockholm, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-443.

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Lindberg, Emil. "Effekten av ansiktsdeformeringar för karaktärer." Thesis, Högskolan i Skövde, Institutionen för informationsteknologi, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-15229.

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Arbetet undersökte huruvida ansiktsdeformationer påverkar hur karaktärer uppfattas vad gäller karaktärernas roll inom den så kallade ungdomsfilm genren, och även relationen kön hade till det. Först definieras attraktivitet för att sedan användas som grund för artefakten. Arbetet har den så kallade haloeffekten som grund, vilket innebär att en person som uppfattas att ha ett positivt drag uppfattas som en bättre person i överlag. Stereotyper och vad som kan orsaka att personer sätts i stereotyper undersöks, och även hur deformationer har stereotyper kopplade till sig. Därefter diskuteras kortfattat om genus och ungdomsfilm genren. En artefakt skapades som består av fyra illustrationer som gestaltar en manlig och en kvinnlig karaktär med både en deformerad och icke deformerad variant var. Därefter genomfördes en kvalitativ undersökning som bestod av åtta semistrukturerade intervjuer. Resultatet visar att deformationer hade en påverkan för den roll som karaktärerna förväntades att ha.
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Aletto, Angela, and Sofia Engström. "Differentialsättningar i höga byggnader mellan vertikalt bärande element av stål och betong : Tidsberoende deformationer i element av betong på grund av lasthistorik, krypning, krympning och elastisk deformation samt elastisk deformation i stålpelare." Thesis, KTH, Byggvetenskap, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-174073.

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I höga hus, i storleksordningen 100 m och högre, med vertikalbärande stomme av stål och betong kan differentialsättningar uppstå då de olika materialen deformeras olika. Detta ger med tiden lutande bjälklag. I det här arbetet har ett beräkningsprogram tagits fram med hjälp av Mathcad för att räkna ut de slutliga deformationerna och hur mycket man behöver kompensera för skillnaderna i deformation genom att gjuta bjälklagen med fall. Programmet är tänkt att användas av WSP i projekteringen av höga hus. Med hjälp av programmet har parametriska studier gjorts och det visade sig att genom att ändra på vissa parametrar kan differentialsättningarna utjämnas. I vissa fall kan detta medföra att gjutning med fall ej är nödvändigt.
When high buildings are built with steel and concrete collaborating, some problems may occur because the materials deform differently. The differences in the final deformations make horizontally casted floors start to lean over time. In this study a program has been developed in Mathcad to calculate the final deformations and differences. The differences can then be compensated by casting the floor with a slope. The program is supposed to be used by WSP to project high buildings. The program has been used for some parametric studies to show how different parameters can decrease the differences. If this makes the differences small enough it will not even be necessary to cast floors with a slope.
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Pettersson, Torbjörn. "OMBYGGNAD AV TRAFIKPLATS : Ekhagsmotet i Jönköping." Thesis, Jönköping University, JTH, Civil Engineering, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-10491.

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Melle, Daniel, and Larsson Johan. "Mätningar av kantviksmaskin vid klämningsrörelse." Thesis, Högskolan i Skövde, Institutionen för ingenjörsvetenskap, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-17167.

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I en kantviksmaskin som används för plåtbockning sker oönskade deformationer i mekanismen som klämmer fast arbetsmaterialet. Risken finns att deformationerna gör så arbetsmaterialet flyttas och det kan påverka positionen för bockningen.Målet med studien var att mäta laster och deformationer i kantviksmaskinen och sammanställa mätdata för att jämföra med FEM-analyser av konstruktionen och till grund för framtida arbete med maskinen. Problemet undersöktes genom att utföra mätningar med LVDT-givare och en lastcell. Mätresultatet visade att det blev en förskjutning och vid fastklämningen av arbetsmaterialet varierade klämkraften. FEM-analyserna kom upp i en lägre förskjutning än den uppmätta. Det finns då misstanke om att en del av förskjutningen kan bero på en mekanism för verktygsbyte. För att bekräfta detta behöver mätningar genomföras som kan visa bidraget av deformation från denna mekanism. FEM-analyserna gjordes med olika lastfördelning för att motsvara klämkraften. Analysen med en uppdelad last var baserad på klämkraftens fördelning som var uppmätt och det gav en fördelning av förskjutningen som var lik den uppmätta. För framtida analyser rekommenderas att använda denna eller en liknande lastfördelning. Utifrån mätningar och analyser konstateras det att överprismat böjs och vrids under klämningen. Detta i sin tur ändrar öververktygens position samt bidrar till att klämning inte sker i mittenpositionerna.
In an edge folding machine, used for sheet metal bending, which have undesired deformations in the mechanism that clamps the work material there is a risk that the deformations will cause the work material to be moved and this can affect the position of the bending. The aim of the study was to measure loads and deformations in the edge folding machine and compile measurement data to compare with FEM-analyzes of the design to get a basis for future work with the machine. The problem was investigated by carrying out measurements with LVDT-sensors and a load cell. The results showed that there was a displacement in the clamping of the work material and that the clamping force varied. The FEM-analyzes came up in a lower displacement than the measured one. A possible conjecture could be that a part of the displacement may be due to the tool change mechanism. To confirm this, measurements need to be performed which can show the contribution of deformation from this mechanism. The FEM-analyzes were made with different load distribution to correspond to the clamping force. The analysis with a divided load where the sectioning was based on the distribution of the clamping force that was measured gave a distribution of the displacement that was similar to the measured. For future analyzes it is recommended to use this or a similar load distribution. Based on measurements and analyzes it is found that the upper prism is bent and twisted during the clamping. This changes the position of the top tools and contribute to no clamping in the middle positions.
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Books on the topic "Deformationer"

1

Blenkinsop, Tom. Deformation microstructures and mechanisms in minerals and rocks. Dordrecht: Kluwer Academic Publishers, 2000.

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Hartshorne, Robin. Deformation theory. New York: Springer, 2010.

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Blenkinsop, Tom G. Deformation microstructures and mechanisms in minerals and rocks. Dordrecht: Kluwer Academic Publishers, 2000.

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Fliervoet, Timon F. Deformation mechanisms in fine grained quartzo-feldspathic mylonites: An electron microscopy study. [Utrecht: Faculteit Aardwetenschappen, Universiteit Utrecht, 1995.

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Luehring, Ronald W. Methods for determining in situ deformation of rock masses. Denver, Colo: Geotechnical Branch, Division of Research and Laboratory Services, Engineering and Research Center, U.S. Dept. of the Interior, Bureau of Reclamation, 1988.

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Johnson, Arvid M. Folding of viscous layers: Mechanical analysis and interpretation of structures in deformed rock. New York: Columbia University Press, 1994.

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Ieşan, D., and A. Scalia. Thermoelastic Deformations. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-017-3517-9.

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Ieşan, Dorin. Thermoelastic deformations. Dordrecht: Kluwer Academic, 1996.

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Tvardovskiy, A. V. Sorbent deformation. Amsterdam: Elsevier Academic Press, 2007.

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Deformation theory. New York: Springer, 2010.

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Book chapters on the topic "Deformationer"

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Kessel, Siegfried, and Dirk Fröhling. "Deformationen." In Technische Mechanik / Technical Mechanics, 31–38. Wiesbaden: Vieweg+Teubner Verlag, 1998. http://dx.doi.org/10.1007/978-3-322-82998-6_4.

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Kessel, Siegfried, and Dirk Fröhling. "Deformationen." In Technische Mechanik - Engineering Mechanics, 31–37. Wiesbaden: Vieweg+Teubner Verlag, 2012. http://dx.doi.org/10.1007/978-3-8348-2182-9_4.

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Jung, Yvonne, Holger Graf, Johannes Behr, and Arjan Kuijper. "Mesh Deformations in X3D via CUDA with Freeform Deformation Lattices." In Lecture Notes in Computer Science, 343–51. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-22024-1_38.

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Ieşan, D., and A. Scalia. "The Foundations of the Theory of Thermoelasticity." In Thermoelastic Deformations, 1–30. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-017-3517-9_1.

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Ieşan, D., and A. Scalia. "The Linear Theory of Thermoelasticity for Bodies with Initial Stress and Initial Heat Flux." In Thermoelastic Deformations, 31–98. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-017-3517-9_2.

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Ieşan, D., and A. Scalia. "Thermoelastodynamics of Bodies without Initial Deformations." In Thermoelastic Deformations, 99–163. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-017-3517-9_3.

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Ieşan, D., and A. Scalia. "Problems of Equilibrium." In Thermoelastic Deformations, 165–241. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-017-3517-9_4.

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Ieşan, D., and A. Scalia. "Nonlinear Thermoelasticity." In Thermoelastic Deformations, 243–84. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-017-3517-9_5.

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Gould, Phillip L. "Deformations." In Introduction to Linear Elasticity, 36–49. New York, NY: Springer US, 1989. http://dx.doi.org/10.1007/978-1-4684-0179-0_3.

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Talpaert, Yves R. "Deformations." In Tensor Analysis and Continuum Mechanics, 171–261. Dordrecht: Springer Netherlands, 2002. http://dx.doi.org/10.1007/978-94-015-9988-7_3.

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Conference papers on the topic "Deformationer"

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Suzuki, Nobuhisa, and Takekazu Arakawa. "Inelastic Deformation of Pipelines Induced by Temporary Ground Deformations." In 2018 12th International Pipeline Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/ipc2018-78205.

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This paper describes a new design method to obtain the inelastic deformation of pipelines induced by temporary ground deformations. The proposed design method consists of an elastic solution and a strain conversion procedure which was developed to predict the inelastic strain distribution by using the elastic solution and a stress-strain curve. Roundhouse type, yield-plateau type, and trilinear stress-strain curves are considered. Validation of the proposed method is conducted by comparing the results predicted by the proposed method with the results obtained by finite element analyses.
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Frydryszak, Andrzej, Jerzy Lukierski, Pierre Minnaert, and Marek Mozrzymas. "Quantum deformations of conformal algebras with mass-like deformation parameters." In Particles, fields and gravitation. AIP, 1998. http://dx.doi.org/10.1063/1.57114.

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Thorup, S. S., T. A. Darvann, N. V. Hermann, P. Larsen, H. Ólafsdóttir, R. R. Paulsen, A. A. Kane, et al. "Dealing with difficult deformations: construction of a knowledge-based deformation atlas." In SPIE Medical Imaging, edited by Robert C. Molthen and John B. Weaver. SPIE, 2010. http://dx.doi.org/10.1117/12.845670.

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Jordt, Andreas, Stefan Reinhold, and Reinhard Koch. "Tracking of object deformations in color and depth video: deformation models and applications." In SPIE Optical Metrology, edited by Fabio Remondino and Mark R. Shortis. SPIE, 2015. http://dx.doi.org/10.1117/12.2190780.

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Baik, Andrew D., X. Lucas Lu, Elizabeth M. Hillman, Cheng Dong, and X. Edward Guo. "Pseudo-3D Visualization of Cytoskeletal and Whole-Cell Deformation of MLO-Y4 Osteocytes Under Flow." In ASME 2010 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2010. http://dx.doi.org/10.1115/sbc2010-19239.

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Osteocytes respond to fluid shear loading by activating various biochemical pathways, mediating a dynamic process of bone formation and resorption. Whole-cell [1] and intracellular deformation [2] may be able to directly activate and modulate relevant biochemical pathways. Most studies on cell deformation have focused only on cell deformation in the plane parallel to the substrate surface. However, height-dependent cell deformation has not been well characterized even though it may contribute greatly to mechanotransduction mechanisms. Traditional techniques to obtain this additional height information of a cell-body include confocal and deconvolution microscopy, which require scanning a z-stack of the cell. However, this inherently limits the timescale under which the deformational information can be visualized. To further investigate this behavior at a high temporal resolution, we propose using a “pseudo-3D” microscopy method to better characterize osteocyte cell behavior. In this study, we present a novel technique that is able to image a single cell simultaneously in two orthogonal planes to obtain real-time images of cell at a millisecond timescale. The objectives of this study were to: (1) visualize actin or microtubule networks with the plasma membrane in two orthogonal planes simultaneously under fluid shear; (2) map out the deformations using digital image correlation; and (3) compare the depth-directional deformation of actin and microtubule networks of osteocytes.
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Michal, Wasilczuk, and Wodtke Michal. "Influence of Collar Deformations on Hydrodynamic Thrust Bearing Performance." In ASME/STLE 2007 International Joint Tribology Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/ijtc2007-44283.

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Theoretical models of hydrodynamic thrust bearings do not usually consider thermoelastic deformations of the collar, while pad deformations are usually taken into account. In many cases the results of theoretical analysis differ much from experimental data despite of variety of effects being included in the TEHD models. In the authors’ research an attempt of including runner thermoelastic deformation in a bearing model was taken up. The results of calculations of a water turbine thrust bearing were compared for three cases — no runner deformation, elastic runner deformation and thermoelastic deformation. Including runner thermoelastic deformations resulted in improved agreement between theoretical results and available experimental data. However a detailed knowledge on runner design and boundary conditions is necessary for realistic evaluation of deformations, which is to a great extent individual design dependent and difficult to generalize.
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Sasaki, Katsuhiko, Takuji Kobayashi, and Ken-Ichi Ohguchi. "Correlation Between Creep and Uniaxial Ratchetting of Sn/37Pb and Sn/3Ag/0.5Cu Solder Alloys." In ASME 2005 Pacific Rim Technical Conference and Exhibition on Integration and Packaging of MEMS, NEMS, and Electronic Systems collocated with the ASME 2005 Heat Transfer Summer Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/ipack2005-73054.

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Ratchetting deformations of solder alloys are significant deformations for the safety and reliability of solder joints of electronic packaging. This paper discusses a correlation between creep and uniaxial ratchetting deformations to clarify the difference in the time-dependent deformations between lead-free and lead-containing solder alloys. Uniaxial ratchetting tests are conducted by cyclic tension-compression and cyclic tension-unloading with the several ratios of maximum to minimum stresses. Additional creep tests are also conducted after the uniaxial ratchetting tests to clarify the effect of the uniaxial ratchetting on the creep deformation. A method to evaluate the uniaxial ratchetting deformation is discussed using the creep curves. The results show that the uniaxial ratchetting deformation correlates to the creep deformation and that the correlation is different between the lead-free and lead-containing solder alloys.
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Johnston, Dennis C., and Thomas G. Hrncir. "Using In-Line Inspection to Address Deformations Containing Near-Neutral pH Stress Corrosion Cracking." In 2002 4th International Pipeline Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/ipc2002-27063.

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Marathon Ashland Pipe Line LLC (MAPL) experienced a pipeline release on January 27, 2000 from cracking in a bottom-side shallow deformation. The crack that caused the release was determined to have propagated due to corrosion fatigue that progressed from an area of near-neutral pH stress corrosion cracks. A combination of a transverse field magnetic flux inspection (TFI) tool and a slope-deformation tool were used to inspect the entire pipeline segment for additional injurious deformations that could contain cracks. The TFI tool data were used to differentiate deformations that contained linear indications (typically cracks or corrosion) from deformations that did not. The slope-deformation tool data were used to measure the deformation magnitudes and shapes and to assist with locating the (TFI) deformations that were to be excavated. The pipe conditions necessary for these types of cracking to occur are discussed as well as the findings of the in-line inspection and remediation program. Prior to this release, it was perceived within the industry that constrained shallow deformations were not likely to fail catastrophically. The failure mechanism, particularly from constrained deformations, was normally as a leak. The near-neutral pH stress corrosion cracking phenomenon within deformations was first thought to be a unique event. Based on the investigation program conducted by MAPL, this phenomenon was identified elsewhere within the pipeline system. Based on MAPL’s investigation, pipelines susceptible to or containing slight deformations (typically high D/t ratios) in areas with groundwater containing high levels of dissolved carbon dioxide and coated with materials prone to shielding cathodic protection may be particularly susceptible to the deformation near-neutral pH stress corrosion cracking phenomenon.
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Sasaki, Katsuhiko, Takuji Kobayashi, and Ken-Ichi Ohguchi. "Microstructural Change of Sn/37Pb and Sn/3Ag/0.5Cu Solder Alloys Subjected to Uniaxial Ratchetting Deformation." In ASME 2007 InterPACK Conference collocated with the ASME/JSME 2007 Thermal Engineering Heat Transfer Summer Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/ipack2007-33603.

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Ratchetting deformations of solder alloys are significant deformations for the safety and reliability of solder joints of electronic packaging. In this paper, the microstructural change of the solder alloys due to the uniaxial ratchetting deformation is evaluated to clarify the effect of the microstructure on the viscous deformation of solder alloys. The microstructures are observed after the specimens are subjected to the uniaxial ratchetting deformation during several cycle numbers. The change of the size of grains or lamella structures is used to evaluate the uniaxial ratchetting deformation of solder alloys. The observation clarifies that the differences in the microstructural change due to the uniaxial ratchetting deformation between the lead-free and lead-containing solder alloys. The uniaxial ratchetting deformation and the additional creep deformation after the ratchetting deformation is also simulated by the dislocation based constitutive model. The simulation suggests that the material parameters used in the constitutive model may be correlated to the microstructural change of the solder alloys.
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van Es, Sjors H. J., and Arnold M. Gresnigt. "Experimental and Numerical Investigation Into the Behavior of Buried Steel Pipelines Under Strike-Slip Fault Movement." In 2016 11th International Pipeline Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/ipc2016-64095.

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Buried steel pipelines for water and hydrocarbon transmission in seismic regions may be subjected to large imposed deformations. When a buried pipeline crosses an active strike-slip fault, the relative motion of the two soil bodies in which is it embedded can lead to significant deformation of the pipeline and possibly to loss of containment. To be able to fully understand the effects of this movement and the interaction between pipe and soil on the strain demands in the pipeline, a novel full scale experimental setup has been developed. To allow accurate monitoring of the pipeline deformation, the pipe-surrounding soil has been replaced with appropriate nonlinear springs, leaving the pipe bare during the experiment. In a total of ten tests, the strain demand in a pipeline as a result of these ground-induced deformations has been investigated. The testing program includes variations of pipeline geometry, steel grade and internal pressure. Furthermore, cohesive and non-cohesive soils have been simulated in the tests. Observed responses of the pipeline include local buckling, high tensile strains (up to 5%) and, in one case, cracking of the pipeline. Based on experiences with these experiments, a numerical model has been developed that uses non-linear springs to model the pipe-soil interaction. By modelling the pipe and soil conditions that were simulated in the ten experiments, this model has been calibrated and validated. Comparisons between the model predictions and test results show that the numerical model is able to predict the deformational behavior of the pipeline accurately. Moreover, also the formation of local buckles is predicted with satisfying results. The results of the validation operation lead to the conclusion that the new model is performing well. By omitting the modelling of the full soil body, computation time is reduced, increasing practical use of the developed model.
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Reports on the topic "Deformationer"

1

Real Fernández, Elena. ¿PUEDE HABER 5 FASES DE DEFORMACIÓN HERCÍNICA EN LA ZONA DE VALDEMORILLO (MADRID)? Ilustre Colegio Oficial de Geólogos, October 2020. http://dx.doi.org/10.21028/erf.2020.10.27.

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This work aims to understand the processes that have taken part in the deformation, both on a small and large scale, of metamorphic materials in Valdemorillo area, located in the west of the Community of Madrid and within the Spanish Central System. The objective is to understand the kinematic evolution and the specific mechanical behaviour of igneous-metamorphic materials from the area, deformed by certain efforts developed throughout the Hercynian Orogeny. Therefore, a structural analysis has been carried out throughout a geological mapping scaled 1: 25000 and the analysis of various petrographic studies by microscope. Thus, a total of 5 different deformations have been identified, which have allowed us to better understand the reconstruction of the processes generated in these materials and that we see today.
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Okulitch, A. V., J. J. Packard, and A. I. Zolnai. Late Silurian-Early Devonian Deformation of the Boothia Uplift [Chapter 12: Silurian-Early Carboniferous Deformational Phases and Associated Metamorphism and Plutonism, Arctic Islands]. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1991. http://dx.doi.org/10.4095/133981.

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M. Lin and D. Kicker. DEFORMATION MONITORING ANALYSIS. Office of Scientific and Technical Information (OSTI), September 1998. http://dx.doi.org/10.2172/862045.

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Harrison, J. C., and T. A. Brent. Late Devonian-Early Carboniferous Deformation, Prince Patrick and Banks Islands [Chapter 12: Silurian-Early Carboniferous Deformational Phases and Associated Metamorphism and Plutonism, Arctic Islands]. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1991. http://dx.doi.org/10.4095/133991.

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Soper, N. J., and A. K. Higgins. Deformation [Chapter 11: Devonian-Early Carboniferous Deformation and Metamorphism, North Greenland]. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1991. http://dx.doi.org/10.4095/100308.

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Mladenov, Ivaïlo M. Deformations of Minimal Surfaces. GIQ, 2012. http://dx.doi.org/10.7546/giq-1-2000-163-174.

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Kocks, U. F., J. D. Embury, A. J. Beaudoin, P. R. Dawson, S. R. MacEwen, and H. J. Mecking. Advanced deformation process modeling. Office of Scientific and Technical Information (OSTI), August 1997. http://dx.doi.org/10.2172/516981.

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Trettin, H. P. Middle Devonian To Early Carboniferous Deformations, northern Ellesmere and Axel Heiberg Islands [Chapter 12: Silurian- Early Carboniferous Deformational Phases and Associated Metamorphism and Plutonism, Arctic Islands]. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1991. http://dx.doi.org/10.4095/133985.

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Barham, Matthew Ian. Finite Deformation of Magnetoelastic Film. Office of Scientific and Technical Information (OSTI), May 2011. http://dx.doi.org/10.2172/1113436.

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Bardenhagen, S. G., J. U. Brackbill, and D. L. Sulsky. Shear deformation in granular materials. Office of Scientific and Technical Information (OSTI), December 1998. http://dx.doi.org/10.2172/329539.

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