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Dissertations / Theses on the topic 'Large deformation'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Rückert, Jens, and Arnd Meyer. "Kirchhoff Plates and Large Deformation." Universitätsbibliothek Chemnitz, 2012. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-96896.

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In the simulation of deformations of plates it is well known that we have to use a special treatment of the thickness dependence. Therewith we achieve a reduction of dimension from 3D to 2D. For linear elasticity and small deformations several techniques are well established to handle the reduction of dimension and achieve acceptable numerical results. In the case of large deformations of plates with non-linear material behaviour there exist different problems. For example the analytical integration over the thickness of the plate is not possible due to the non-linearities arising from the mat

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2

Crabbé, Blandine. "Gradient damage models in large deformation." Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLX085/document.

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Les modèles d'endommagement à gradient, aussi dénommés modèles à champs de phases, sont désormais largement utilisés pour modéliser la rupture fragile et ductile, depuis l'initiation de l'endommagement jusqu'à la propagation d'une fissure. Cependant, la majorité des études disponibles dans la littérature ne concerne que le cadre des petites déformations, et très peu d'études poussées ont été menées afin d'étudier leur pertinence dans un contexte de grandes déformations. Ce serait pourtant d'un intérêt primordial, notamment pour l'industrie pneumatique, qui deviendrait alors capable de prédire

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3

Boyce, Mary Cunningham. "Large inelastic deformation of glassy polymers." Thesis, Massachusetts Institute of Technology, 1986. http://hdl.handle.net/1721.1/14909.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1987.<br>MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING<br>Bibliography: leaves 126-130.<br>by Mary Cunningham Boyce.<br>Ph.D.

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4

Paradinas, Salsón Teresa. "Simplification, approximation and deformation of large models." Doctoral thesis, Universitat de Girona, 2011. http://hdl.handle.net/10803/51293.

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The high level of realism and interaction in many computer graphic applications requires techniques for processing complex geometric models. First, we present a method that provides an accurate low-resolution approximation from a multi-chart textured model that guarantees geometric fidelity and correct preservation of the appearance attributes. Then, we introduce a mesh structure called Compact Model that approximates dense triangular meshes while preserving sharp features, allowing adaptive reconstructions and supporting textured models. Next, we design a new space deformation technique calle

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5

Tuzun, Aydin. "Large Deformation Analysis Of Flexible Multibody Systems." Phd thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614821/index.pdf.

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Large displacement and large strain problems of mechanical systems can be solved mainly by four methods. These are Floating Frame of Reference, Incremental Finite Element, Large Rotation Vector and Absolute Nodal Coordinate Formulations (ANCF). Due to exact rigid body representation, simple mass matrix structure and non-incremental formulation, ANCF is more convenient in analyzing flexible multibody systems. However, it is limited to problems with regular boundaries, currently. The aim of the thesis is to improve the current ANCF in order to handle various problems with irregular boundaries. F

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6

Derian, Edward J. "Large deformation dynamic bending of composite beams." Thesis, Virginia Tech, 1985. http://hdl.handle.net/10919/45678.

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</p>The large deformation response of composite beams subjected to a dynamic axial load was studied. The beams were loaded with a moderate amount of eccentricity to promote bending. The study was primarily experimental but some finite element results were obtained. Both the deformation and the failure of the beams were of interest. The static response of the beams was also studied in order to determine the difference between the static and dynamic failure. Twelve different laminate types were tested. The beams tested were 23 in. by 2 in. and generally 30 plies thick. The beams were loa

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7

Weise, Martina. "Elastic Incompressibility and Large Deformations." Doctoral thesis, Universitätsbibliothek Chemnitz, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-140113.

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This thesis investigates the numerical simulation of three-dimensional, mechanical deformation problems in the context of large deformations. The main focus lies on the prediction of non-linearly elastic, incompressible material. Based on the equilibrium of forces, we present the weak formulation of the large deformation problem. The discrete version can be derived by using linearisation techniques and an adaptive mixed finite element method. This problem turns out to be a saddle point problem that can, among other methods, be solved via the Bramble-Pasciak conjugate gradient method or the m

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8

Evcim, Mehmet. "Large Deformation Analysis Of Shells Under Impulsive Loading." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/2/12611647/index.pdf.

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In this thesis large deformation behavior of shell structures under high intensity transient loading conditions is investigated by means of finite element method. For this purpose an explicit finite element program is developed with interactive user interface. The developed program deals with geometric and material nonlinearities which stem from large deformation elastic - plastic behavior. Results of the developed code are compared with the experimental data taken from the literature and simulation results of the commercial finite element program Ls-Dyna. Moreover, sensitivity study is carrie

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9

Ma, Jianfeng. "Meshless method for modeling large deformation with elastoplasticity." Diss., Manhattan, Kan. : Kansas State University, 2007. http://hdl.handle.net/2097/402.

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10

RIOS, GABRIEL EMILIANO BARRIENTOS. "NONLINEAR DYNAMICS OF FLEXIBLE STRUCTURES WITH LARGE DEFORMATION." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 1997. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=19770@1.

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COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>É apresentado o modelo não-linear de barras proposto por Simo para o estudo do comportamento dinâmico de estruturas espaciais. A formulação das equações do movimento é feita em um sistema inercial de modo a simplificar o operador de inércia e o material é considerado como elástico linear. Carregamos não – conservativos são considerados de modo que a integração das equações é feita na forma fraca. As partes flexíveis, que são necessariamente estruturas unidimensionais, são descritas por um modelo de barras que generaliza os modelos

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11

Brown, Rebecca A. (Rebecca Ann) 1976. "Large strain deformation of PETG as processing temperatures." Thesis, Massachusetts Institute of Technology, 2000. http://hdl.handle.net/1721.1/88847.

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12

Eterovic, Adrian Luis. "Finite element analysis of large deformation contact problems." Thesis, Massachusetts Institute of Technology, 1992. http://hdl.handle.net/1721.1/13063.

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13

Abu-Saman, Awni. "Large plastic deformation and shear localization of crystals." Doctoral thesis, University of Cape Town, 2000. http://hdl.handle.net/11427/4954.

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14

Derisi, Bijan. "Development of thermoplastic composite tubes for large deformation." Thesis, Connect to online version, 2008. http://proquest.umi.com/pqdweb?did=1675143241&sid=1&Fmt=2&clientId=10306&RQT=309&VName=PQD.

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15

Wan, Deborah Jo-May 1974. "On elastic-plastic large deformation analysis of beams." Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/10076.

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16

Hallett, N. M. "Large displacement deformation of plates subject to projectile impact." Thesis, City University London, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.379616.

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17

Lei, Fulin. "Modeling of articular cartilage optimization, large deformation, and microstructure /." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file 1.21 Mb., 176 p, 2006. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pqdiss&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft_dat=xri:pqdiss:3220728.

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18

Michael, Detlef, and Mathias Meisel. "Some remarks to large deformation elasto-plasticity (continuum formulation)." Universitätsbibliothek Chemnitz, 2005. http://nbn-resolving.de/urn:nbn:de:swb:ch1-200501150.

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The continuum theory of large deformation elasto-plasticity is summarized as far as it is necessary for the numerical treatment with the Finite-Element-Method. Using the calculus of modern differential geometry and functional analysis, the fundamental equations are derived and the proof of most of them is shortly outlined. It was not our aim to give a contribution to the development of the theory, rather to show the theoretical background and the assumptions to be made in state of the art elasto-plasticity.

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19

Cheung, Chip. "Large deformation of textile fabrics using finite element method." Ohio : Ohio University, 1988. http://www.ohiolink.edu/etd/view.cgi?ohiou1182782321.

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20

Weldon, James P. (James Peter). "The deformation of large telescope mirrors and optical quality." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/41428.

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21

Honeker, Christian. "Large strain deformation behavior of oriented triblock copolymer cylinders." Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/10430.

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22

Rehermann, Pablo F. Sanz. "Modeling rock folding with large deformation frictional contact mechanics /." May be available electronically:, 2008. http://proquest.umi.com/login?COPT=REJTPTU1MTUmSU5UPTAmVkVSPTI=&clientId=12498.

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23

Parsons, Ethan M. (Ethan Moore) 1972. "Mechanics of large-strain deformation of particle-modified polymers." Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/37048.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2006.<br>Includes bibliographical references (p. 267-274).<br>Over the past several decades, engineering polymers have become increasingly prevalent in the manufacture of virtually all types of products. Polymers are substantially less dense than metals, easy to machine, and readily formed into quite complex geometries. The properties of polymers may be altered by the introduction of second-phase particles. Typically, soft, rubber particles are added to increase fracture toughness while rigid, mineral part

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24

Smiri, Jalal. "Large plastic deformation of crystals : stability analysis and attractors." Electronic Thesis or Diss., Paris 13, 2024. http://www.theses.fr/2024PA131052.

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Cette thèse porte sur l'utilisation de modèles de plasticité cristalline (PC) pour étudier l'évolution microstructurale des matériaux mono- et polycristallins soumis à des conditions de chargement extrêmes associées à de grandes déformations. La plasticité cristalline constitue un outil puissant pour modéliser les interactions de dislocations, la rotation du réseau cristallin, la croissance des cavités et les effets de taille, offrant ainsi une meilleure compréhension des mécanismes de déformation critiques tels que la localisation des déformations, la formation de bandes de cisaillement et l'

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25

Barnhoorn, Auke. "Rheological and microstructural evolution of carbonate rocks during large strain torsion experiments /." [Zurich] : [s.n.], 2003. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=15309.

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26

Wung, Pey M. "Large deformation analysis of laminated composite structures by a continuum-based shell element with transverse deformation." Diss., Virginia Polytechnic Institute and State University, 1989. http://hdl.handle.net/10919/54815.

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In this work, a finite element formulation and associated computer program is developed for the transient large deformation analysis of laminated composite plate/shell structures. In order to satisfy the plate/shell surface traction boundary conditions and to have accurate stress description while maintaining the low cost of the analysis, a newly assumed displacement field theory is formulated by adding higher-order terms to the transverse displacement component of the first-order shear deformation theory. The laminated shell theory is formulated using the Updated Lagrangian description of a g

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27

Franke, Marlon [Verfasser]. "Discretisation techniques for large deformation computational contact elastodynamics / Marlon Franke." Karlsruhe : KIT Scientific Publishing, 2014. http://www.ksp.kit.edu.

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28

Cheng, Wan. "Large deformation nonlinear FEA and applications for metal forming processes." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1995. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/NQ42732.pdf.

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29

Hillmansen, Stuart. "Large strain bulk deformation and brittle tough transitions in polythene." Thesis, Imperial College London, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.272493.

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30

Karamanou, Marianna. "A study of finite element modelling of large viscoelastic deformation." Thesis, Brunel University, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.415032.

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31

Orazalin, Zhandos Y. "Analysis of large deformation offshore geotechnical problems in soft clay." Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/111442.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Civil and Environmental Engineering, 2017.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 269-281).<br>Although finite element (FE) methods are well established for modeling geotechnical problems in soil masses and soil-structure interaction, most prior research on large deformation problems has been limited to simplified assumptions on drainage conditions and constitutive behavior. This thesis investigates two large deformation problems in soft clay and proposes a methodology for perfo

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32

Talamini, Brandon Louis. "Simulation of deformation and fracture in very large shell structures." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/103420.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Aeronautics and Astronautics, 2015.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from student-submitted PDF version of thesis.<br>Includes bibliographical references (pages 207-221).<br>Although advances in computing have increased the limits of three-dimensional computational solid mechanics, structural elements remain essential in the practical design of very large thin structures such as aircraft fuselages,

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33

Shan, Sicong. "Planar Soft Functional Periodic Structures Exploiting Instabilities and Large Deformation." Thesis, Harvard University, 2015. http://nrs.harvard.edu/urn-3:HUL.InstRepos:23845411.

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Soft materials can significantly change their shape and volume when subjected to various stimuli. Materials with deliberately designed periodic microstructure have long been proved to be characterized by properties that may exceed those of the corresponding bulk material. Though traditionally avoided as modes of failure, mechanical instabilities have recently been exploited to design systems with novel and tunable functionalities. Interestingly, the studies I conducted during my PhD show that the combination of soft materials, periodic structures, mechanical instabilities and large deformation

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34

Chen, Tzung-Ming. "Synthesis of compliant single crystal silicon mechanisms with large deformation." Tönning Lübeck Marburg Der Andere Verl, 2009. http://d-nb.info/995862664/04.

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35

Paloumbi, Vassia Vasiliki. "Monitoring large strain deformation in the processing of polyethylene pipes." Thesis, Imperial College London, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.497537.

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36

Hodge, Michael. "Development, deformation style, and seismic hazard of large normal faults." Thesis, Cardiff University, 2018. http://orca.cf.ac.uk/112226/.

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Young rifts such as the Malawi Rift System, located at the southern end of the East African Rift System, are a natural laboratory for how continents begin to break apart. Extension is typically accommodated by earthquakes within the upper crust. However, where extension occurs at a slow rate, the small number of historically recorded earthquakes likely provides an incomplete view of the potential magnitude range of events, limiting seismic hazard knowledge and the understanding of rift dynamics. Geological and geomorphological studies of faults scarps may help understand how faults develop, st

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37

Bonatti, Colin. "Design and large deformation response of additively-manufactured shell-lattices." Thesis, Massachusetts Institute of Technology, 2019. https://hdl.handle.net/1721.1/121763.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2019<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 179-185).<br>Open-cell cellular solids are porous structures with a large variety of applications, from energy absorption to medical engineering. In an attempt to identify isotropic configurations with high low and large strain mechanical properties, detailed numerical simulations are conducted on a wide range of mesostructures of cubic symmetry. Results are partially validated through uniaxial compression of sp

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38

Shao, Wei. "Identifying the shape collapse problem in large deformation image registration." Thesis, University of Iowa, 2016. https://ir.uiowa.edu/etd/2276.

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This thesis examines and identifies the problems of shape collapse in large deformation image registration. Shape collapse occurs in image registration when a region in the moving image is transformed into a set of near zero volume in the target image space. Shape collapse may occur when the moving image has a structure that is either missing or does not sufficiently overlap the corresponding structure in the target image. We state that shape collapse is a problem in image registration because it may lead to the following consequences: (1) Incorrect pointwise correspondence between different c

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39

Schwaiger, Hans Frederick. "An implementation of smoothed particle hydrodynamics for large deformation, history dependent geomaterials with applications to tectonic deformation /." Thesis, Connect to this title online; UW restricted, 2007. http://hdl.handle.net/1773/6807.

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40

Meyer, Arnd. "Grundgleichungen und adaptive Finite-Elemente-Simulation bei "Großen Deformationen"." Universitätsbibliothek Chemnitz, 2007. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-200701960.

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41

Holsgrove, Stephen Clive. "Large deformation, large roation elasto-plastic shell analysis with particular application to tubular members and joints." Thesis, Kingston University, 1987. http://eprints.kingston.ac.uk/20511/.

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The ultimate strength assessment of steel tubular members is of the utmost importance to the design and maintenance of many structures including large offshore platforms. Ultimate strength assessments I using numerical solutions must model both nonlinear material and geometric behaviour. The latter must consider large displacements, very often large rotations, and possibly even large strains. These numerical solutions must be computationally efficient and be capable of running on generally available computer hardware, i.e. minicomputers. To achieve this efficiency, attention must be paid to pr

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42

Rückert, Jens. "Kirchhoff Plates and Large Deformations - Modelling and C^1-continuous Discretization." Doctoral thesis, Universitätsbibliothek Chemnitz, 2013. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-121275.

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In this thesis a theory for large deformation of plates is presented. Herein aspects of the common 3D-theory for large deformation with the Kirchhoff hypothesis for reducing the dimension from 3D to 2D is combined. Even though the Kirchhoff assumption was developed for small strain and linear material laws, the deformation of thin plates made of isotropic non-linear material was investigated in a numerical experiment. Finally a heavily deformed shell without any change in thickness arises. This way of modeling leads to a two-dimensional strain tensor essentially depending on the first two fund

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43

Ssemakula, Hamzah. "Manufacturihng of heavy rings and large copper canisters by plastic deformation." Doctoral thesis, KTH, Production Engineering, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3682.

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<p>Plastic deformation processes transform material fromas-received state to products meeting certain requirements inproperties, microstructure and shape. To achieve thistransformation, the relationship between material response andprocess conditions should be understood. This is usuallycomplicated by the complex conditions describing the actualprocess. Numerous techniques including empirical, physical,analytical and numerical can be employed.</p><p>In this thesis, numerical technique supported by lab- andfull-scale experiments has been employed to analyse the formingparameters. The first part

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44

SHAHBODAGH, KHAN Babak. "Large Deformation Dynamic Analysis Method for Partially Saturated Elasto-Viscoplastic Soils." 京都大学 (Kyoto University), 2011. http://hdl.handle.net/2433/151955.

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45

Ferranto, Justin. "Experimental characterization and FEA simulation of hyperelastic membranes under large deformation." abstract and full text PDF (free order & download UNR users only), 2005. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1436029.

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46

Polzin, Thomas [Verfasser]. "Large deformation diffeomorphic metric mappings : theory, numerics, and applications / Thomas Polzin." Lübeck : Zentrale Hochschulbibliothek Lübeck, 2018. http://d-nb.info/1168860741/34.

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47

di, Bari Vincenzo. "Large deformation and crystallisation properties of process optimised cocoa butter emulsions." Thesis, University of Birmingham, 2015. http://etheses.bham.ac.uk//id/eprint/6305/.

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The objectives of the research presented in this thesis were: (1) optimise the processing conditions for the production of water-in-cocoa butter emulsions; (2) understand the role of water droplets on the large deformation behaviour and crystallisation properties of emulsified systems. Results showed that a scraped surface heat exchanger could be used to produce tempered emulsions with a small average droplet size (~3 µm). In all systems stability was provided by the emulsifier and fat crystals forming a network both in the bulk and at the interface of the water droplets. Characterisation of t

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48

White, Charles Samuel. "A combined isotropic-kinematic hardening model for large deformation metal plasticity." Thesis, Massachusetts Institute of Technology, 1988. http://hdl.handle.net/1721.1/14400.

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49

Ambrosio, Jorge Alberto Cadete. "Elastic-plastic large deformation of flexible multibody systems in crash analysis." Diss., The University of Arizona, 1991. http://hdl.handle.net/10150/185578.

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The problem of formulating and numerically solving the equations of motion of flexible multibody systems for application to structural impact is considered in this dissertation. As an alternative to experimental tests and to numerical procedures such as hybrid models and finite element methods, multibody dynamics contains the ingredients for efficient crash analysis of these problems provided that a proper description of the deformations of the system components is included. Based on the principles of continuum mechanics, updated and total Lagrangian formulations are used to derive the equatio

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50

Ceccato, Francesca. "Study of large deformation geomechanical problems with the Material Point Method." Doctoral thesis, Università degli studi di Padova, 2015. http://hdl.handle.net/11577/3424697.

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The numerical simulation of real geomechanical problems often entails an high level of complexity; indeed they are often characterized by large deformations, soil-structure interaction and solid-fluid interaction. Moreover, the constitutive behavior of soil is highly non-linear. Landslides, dam failure, pile installation, and undrground excavation are typical examples of large deformation problems in which the interaction between solid a fluid phase as well as the contact between bodies are essential. This thesis addresses the challenging issue of the numerical simulation of large deforma

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