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Dissertations / Theses on the topic 'Geometrical and Structural analysis'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Berk, Aysu. "Geometrical Analysis Of Bridge Forms And Their Feasibility In Structural Design." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12606133/index.pdf.

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Bridges are structures that have both engineering and architectural value. The importance bridges have in society is not only due to their function but their form and posture. Bridges are structures that pass longer spans among all other structures. This passageway includes not only the quantitative values, but the quality also. The perfect harmony between its form and function is reflected in its overall structure. Footbridges are the most intimate type of bridges for people. Usually of smaller dimensions and lighter weight, the design for these types is done with more aesthetic care. In this

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2

Lalyre, Mayela Cecilia González. "Bragança regional airport master plan evaluation (geometrical and structural characteristics)." Master's thesis, Instituto Politécnico de Bragança, Escola Superior de Tecnologia e Gestão, 2012. http://hdl.handle.net/10198/7998.

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Regional airports are important for the development of a European network of integrated air transport. The Bragança Regional Airport is not an exception to this statement and as it looks to increase its capacity and flexibility of aircraft operations the cost of developing the infrastructure becomes highly elevated hindering expansion projects. Regardless, an effort to enhance the actual service level is made where this document aims to provide an evaluation to the Airport Master Plan, focusing on the structural and geometrical characteristics of the airfield facilities. Further, to obta

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3

Ikegawa, Yojiro. "Three-dimensional geometrical analysis of rock mass structure." Thesis, Imperial College London, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.294135.

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4

Hübner, Matthias, Monireh Fazeli, Thomas Gereke, and Chokri Cherif. "Geometrical design and forming analysis of three-dimensional woven node structures." Sage, 2018. https://tud.qucosa.de/id/qucosa%3A35533.

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Structural frames have been established in many technical applications and typically consist of interconnected profiles. The profiles are commonly joined with node elements. For lightweight structures, the use of composite node elements is expedient. Due to the anisotropic mechanical properties of the fibers, high demands are placed on the orientation of the fibers in the textile reinforcement structure. A continuous fiber course around the circumference and at the junctions is necessary for an excellent force transmission. A special binding and forming process was developed based on the weavi

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5

Siddiqui, Muhammad Owais Raza. "Geometrical modelling and numerical analysis of thermal behaviour of textile structures." Thesis, Heriot-Watt University, 2015. http://hdl.handle.net/10399/2886.

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The thermal properties of fabric are an important factor in the understanding of the thermo-physiological comfort of clothing. The principal aim of this research was to develop novel numerical methods, Graphical User Interface (GUI) plug-ins and experimental setup to evaluate the effective thermal conductivity and thermal resistance of different textile structures which has significant impact on the thermal comfort of clothing. The numerical methods also include the analysis of the effect of fibre orientation, thermal anisotropy of fibre, temperature dependent thermal conductivity and fibre vo

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6

Lu, Ya Nan. "Static and forced vibration analysis of plane truss structure with geometrical nonlinearity." Thesis, University of Macau, 2015. http://umaclib3.umac.mo/record=b3335487.

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7

Al-Qarra, H. H. "The geometrically nonlinear analysis of sandwich panels." Thesis, University of Southampton, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.373567.

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8

AUGELLO, RICCARDO. "Advanced FEs for the micropolar and geometrical nonlinear analyses of composite structures." Doctoral thesis, Politecnico di Torino, 2021. http://hdl.handle.net/11583/2872330.

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9

Madutujuh, Nathan. "Geometrically nonlinear analysis of plane trusses and plane frames." Master's thesis, This resource online, 1991. http://scholar.lib.vt.edu/theses/available/etd-01262010-020134/.

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10

Young, Leyland Gregory. "Geometrically exact modeling, analysis and design of high precision membranes /." free to MU campus, to others for purchase, 2003. http://wwwlib.umi.com/cr/mo/fullcit?p3099647.

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11

Jau, Jih Jih. "Geometrically nonlinear finite element analysis of space frames." Diss., Virginia Polytechnic Institute and State University, 1985. http://hdl.handle.net/10919/54302.

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The displacement method of the finite element is adopted. Both the updated Lagrangian formulation and total Lagrangian formulation of a three-dimensional beam element is employed for large displacement and large rotation, but small strain analysis. A beam-column element or finite element can be used to model geometrically nonlinear behavior of space frames. The two element models are compared on the basis of their efficiency, accuracy, economy and limitations. An iterative approach, either Newton-Raphson iteration or modified Riks/Wempner iteration, is employed to trace the nonlinear equilib

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12

Djoudi, Mohamed Salah. "Strain based finite elements for linear and geometrically non-linear analysis of structures." Thesis, Cardiff University, 1990. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.316332.

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13

Sampathkumar, Narasimhan. "Three dimensional geometrical and material nonlinear finite element analysis of adhesively bonded joints for marine structures." Thesis, University of Southampton, 2005. https://eprints.soton.ac.uk/142767/.

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The use of adhesive bonding as a structural joining method has been gaining recognition in marine industry in recent years, though it has been widely adopted in other fields such as aerospace, automobiles, trains and in civil constructions. The type of materials used and design practices followed in marine structures are different from what is applied in other disciplines. Therefore new research approaches are required and recent novel ideas are ex- plored in the context of application of bonded joint configurations in marine environment. The research is directed at developing analysis tools f

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14

FERRERO, CHIARA. "Structural Behaviour of Masonry Arches on Moving Supports: from On-site Observation to Experimental and Numerical Analysis." Doctoral thesis, Università degli studi di Genova, 2021. http://hdl.handle.net/11567/1049725.

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Since ancient times, master builders have used arches to cover large spans in masonry structures. As a consequence, nowadays the safety assessment of these structural elements plays a fundamental role in the conservation of built cultural heritage. Due to their frequent occurrence, support displacements are one of the primary sources of damage for masonry arches. Among the potential causes of support displacements, slow-moving landslides have received very little attention from the scientific community. The present thesis is motivated by the observation of extensive and severe damage in the

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15

Garcilazo, Juan Jose. "Nonlinear Analysis of Plane Frames Subjected to Temperature Changes." OpenSIUC, 2015. https://opensiuc.lib.siu.edu/dissertations/1009.

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In this study, methods for the geometric nonlinear analysis and the material nonlinear analysis of plane frames subjected to elevated temperatures are presented. The method of analysis is based on a Eulerian (co-rotational) formulation, which was developed initially for static loads, and is extended herein to include geometric and material nonlinearities. Local element force-deformation relationships are derived using the beam-column theory, taking into consideration the effect of curvature due to temperature gradient across the element cross-section. The changes in element chord lengths due t

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16

Badawi, Mohammed Moulham. "Development of the P-version finite strip method for geometrically non-linear structures." Thesis, University of Leeds, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.255241.

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17

Wang, Xiang [Verfasser], Kasten [Akademischer Betreuer] Tichelmann, Oliver [Akademischer Betreuer] Tessmann, and Jens [Akademischer Betreuer] Schneider. "Cellular Cavity Structure and its Building Technology for Shell Structure with Thin Sheet Materials-- Geometrical Analysis and Structural Consideration in the Design and Building Processes / Xiang Wang ; Kasten Tichelmann, Oliver Tessmann, Jens Schneider." Darmstadt : Universitäts- und Landesbibliothek Darmstadt, 2017. http://d-nb.info/1145141919/34.

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18

Ferrero, Chiara. "Structural behaviour of masonry arches on moving supports : from on-site observation to experimental and numerical analysis." Doctoral thesis, Universitat Politècnica de Catalunya, 2021. http://hdl.handle.net/10803/672366.

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Since ancient times, master builders have used arches to cover large spans in masonry structures. As a consequence, nowadays the safety assessment of these structural elements plays a fundamental role in the conservation of built cultural heritage. Due to their frequent occurrence, support displacements are one of the primary sources of damage for masonry arches. Among the potential causes of support displacements, slow-moving landslides have received very little attention from the scientific community. The present thesis is motivated by the observation of extensive and severe damage in the

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19

Kent, A. J. "Finite element models for the analysis of reinforced concrete shell structures with geometric and material nonlinearities." Thesis, Swansea University, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.280516.

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20

NARAYANAN, VIJAY. "STRUCTURAL ANALYSIS OF REINFORCED SHELL WING MODEL FOR JOINED-WING CONFIGURATION." University of Cincinnati / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1116214221.

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21

Yao, Ming-Sheng. "Linear and geometrically nonlinear structural dynamic analysis using reduced basis finite element technique." Thesis, Imperial College London, 1990. http://hdl.handle.net/10044/1/46620.

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22

Fonseka, Merrenege Chinthaka Manoranjan. "Combined ring element/quadrilateral element method for the analysis of shells of revolution with geometric imperfections." Thesis, University of Southampton, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.256264.

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23

Abu, Kassim Abdul Majid. "Theorems of structural and geometric variation for linear and nonlinear finite element analysis." Thesis, University of Edinburgh, 1985. http://hdl.handle.net/1842/10710.

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24

Deshpande, Aditya S. "The use of geometric uncertainty data in aero engine structural analysis and design." Thesis, University of Southampton, 2013. https://eprints.soton.ac.uk/361705/.

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A gas turbine disc has three critical regions for which lifing calculations are essential: the assembly holes or weld areas, the hub region, and the blade-disc attachment area. Typically, a firtree joint is used to attach the blades to the turbine disc instead of a dove-tail joint, which is commonly used for compressor discs. A firtree joint involves contact between two surfaces at more than one location which makes the joint more difficult to design. Large loads generated due to the centrifugal action of the disc and associated blades are distributed over multiple areas of contact within the

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25

Wang, Kairong. "Investigating the Domain of Geometric Inductive Reasoning Problems: A Structural Equation Modeling Analysis." Diss., CLICK HERE for online access, 2008. http://contentdm.lib.byu.edu/ETD/image/etd2385.pdf.

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26

ROBALINHO, ERIC. "Otimizacao da forma geometrica de estruturas utilizando o metodo dos elementos de contorno." reponame:Repositório Institucional do IPEN, 1998. http://repositorio.ipen.br:8080/xmlui/handle/123456789/9266.

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Made available in DSpace on 2014-10-09T12:25:29Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T14:02:40Z (GMT). No. of bitstreams: 1 06212.pdf: 5503414 bytes, checksum: 8dd04d9823a7790f90c828fa5ac8be54 (MD5)<br>Dissertacao (Mestrado)<br>IPEN/D<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP

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27

Ragon, Scott Alan II. "Development of a Global/Local Approach and a Geometrically Non-linear Local Panel Analysis for Structural Design." Diss., Virginia Tech, 1998. http://hdl.handle.net/10919/30761.

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A computationally efficient analysis capability for the geometrically non-linear response of compressively loaded prismatic plate structures was developed. Both a "full" finite strip solution procedure and a "reduced" solution procedure were implemented in a FORTRAN 90 computer code, and comparisons were made with results available in the technical literature. Both the full and reduced solution procedures were demonstrated to provide accurate results for displacement and strain quantities through moderately large post-buckling loads. The full method is a non-linear finite strip analysis of the

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28

Chandrashekhara, K. "Geometric and material nonlinear analysis of laminated composite plates and shells." Diss., Virginia Polytechnic Institute and State University, 1985. http://hdl.handle.net/10919/54739.

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An inelastic material model for laminated composite plates and shells is formulated and incorporated into a finite element model that accounts for both geometric nonlinearity and transverse shear stresses. The elasto-plastic material behavior is incorporated using the flow theory of plasticity. In particular, the modified version of Hill's initial yield criterion is used in which anisotropic parameters of plasticity are introduced with isotropic strain hardening. The shear deformation is accounted for using an extension of the Sanders shell theory and the geometric nonlinearity is considered i

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29

Fober, Thomas [Verfasser], and Eyke [Akademischer Betreuer] Hüllermeier. "Geometric, Feature-based and Graph-based Approaches for the Structural Analysis of Protein Binding Sites : Novel Methods and Computational Analysis / Thomas Fober. Betreuer: Eyke Hüllermeier." Marburg : Philipps-Universität Marburg, 2013. http://d-nb.info/1038786061/34.

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30

Schöberl, Markus [Verfasser]. "Contributions to the Analysis of Structural Properties of Dynamical Systems in Control and Systems Theory : A Geometric Approach / Markus Schöberl." Aachen : Shaker, 2014. http://d-nb.info/1060622521/34.

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31

Noël, Frédéric. "Mailleur auto-adaptatif pour des surfaces gauches en vue de la conception intégrée." Grenoble INPG, 1994. http://www.theses.fr/1994INPG0110.

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Les sciences de l'ingenieur font souvent appel a des maillages. Cette representation geometrique demeure difficile a controler lorsque le domaine maille correspond a une surface gauche. Reposant sur un lien efficace entre un maillage et un modele geometrique (base sur un formalisme de type non uniform rational b-spline), cette etude propose des outils de manipulation geometrique ou topologique des maillages surfaciques. Elle met aussi en evidence des problemes inherents a la liaison c. A. O. -calculs de structures et indique des outils de base pour la gestion de ces problemes. Sans necessiter

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32

Leal, Luiz Alberto Araújo de Seixas. "Análise elástica dos efeitos da não linearidade geométrica em estruturas de aço." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/3/3144/tde-14122014-161038/.

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A análise das estruturas de aço sujeitas a ações verticais e horizontais, em termos de esforços solicitantes, deslocamentos e rotações, muitas vezes requer a consideração dos efeitos da não linearidade geométrica. Em outras palavras, a interação entre os deslocamentos e os esforços externos pode provocar uma alteração na intensidade dos esforços internos que solicitam a estrutura que, caso não seja adequadamente avaliada, pode conduzir a uma redução significativa dos níveis de segurança. Nesse contexto, destacam-se duas metodologias de avaliação desses efeitos: aquelas baseadas em análises apr

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33

Scott, Joseph E. "Column Buckling Analysis of Wood Stud Members due to Reduced Stiffness over Partial Member Length." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1543325743355501.

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34

Wahrhaftig, Alexandre de Macêdo. "Uma avaliação experimental e numérica do efeito da rigidez geométrica na resposta dinâmica de estruturas esbeltas sujeitas à excitação de vento." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/3/3144/tde-05112008-140848/.

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Por uma escolha política e economicamente pragmática, o Brasil optou por desenvolver a telefonia celular, com intenção de abreviar uma etapa de desenvolvimento. Tomada a decisão, a implantação foi feita num ritmo explosivo a partir da década de 1990, com instalação de dezenas de milhares de estações. Apesar da disparidade de custo entre os sistemas eletrônicos e as obras civis, pouco se investiu na engenharia estrutural envolvida, resultando em projetos e construções realizados com metodologia duvidosa e na herança de uma grande quantidade de problemas estruturais. Represada por considerações

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35

Chabani, Arezki. "Analyse méthodologique et caractérisation multi-échelle des systèmes de fractures à l’interface socle/couverture sédimentaire – application à la géothermie (bassin de Valence, SE France)." Electronic Thesis or Diss., Paris Sciences et Lettres (ComUE), 2019. http://www.theses.fr/2019PSLEM046.

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Le bassin de Valence, un fossé d’effondrement appartenant au système ECRIS localisé le long du couloir Rhodanien, est l’objet d’études approfondies quant à son potentiel géothermique. Dû à l’histoire évolutive polyphasée du bassin, les réseaux de fractures du socle et de la base de la couverture sédimentaire ciblés pour l’exploitation géothermique présentent une organisation complexe. Cette étude vise donc à caractériser l’organisation du bassin de Valence et de ces réseaux de fractures. Elle s’appuie sur les données sismiques et de forages du bassin, ainsi que les cartes géologiques, le modèl

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36

Balmaseda, Aguirre Mikel. "Reduced order models for nonlinear dynamic analysis of rotating structures : Application to turbomachinery blades." Thesis, Lyon, 2019. http://www.theses.fr/2019LYSEI067.

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In the present work reduced order models (ROM) that are independent from the full order finite element models (FOM) considering geometrical non linearities are developed and applied to the dynamic study of rotating structures. The structure is considered to present nonlinear vibrations around the pre-stressed equilibrium induced by rotation enhancing the classical linearised approach. The reduced nonlinear forces are represented by a polynomial expansion obtained by the Stiffness. Evaluation Procedure (STEP) and then corrected by means of an original procedure by means of a Proper Orthogonal D

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37

Hurff, Jonathan B. "Stability of precast prestressed concrete bridge girders considering imperfections and thermal effects." Diss., Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/34684.

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The spans of precast prestressed concrete bridge girders have become longer to provide more economical and safer transportation structures. As the spans have increased, so has the depth of the girders which in turn have increased the slenderness of the girders. Slenderness in a beam or girder would increase the likelihood that a stability failure would occur. Stability failures could pose a danger to construction personnel due to the sudden nature in which a stability failure would occur. Furthermore, stability failures of prestressed concrete girders during construction would cause a detr

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38

Joh, Joongseon. "Geometrical analysis of underconstrained robotic mechanisms." Diss., Georgia Institute of Technology, 1991. http://hdl.handle.net/1853/17321.

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39

Kzam, Aref Kalilo Lima. "Análise da instabilidade estrutural global e local pelo MEF posicional com determinação de pontos críticos na trajetória de equilíbrio." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/18/18134/tde-02032016-104333/.

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Nesta tese, apresenta-se o método dos elementos finitos posicional descrito em um referencial Lagrangiano total dedicado à análise de instabilidade de estruturas tridimensionais. Três tipos de elementos finitos são implementados e testados, a saber: os elementos de barra simples, casca e barra geral. A análise de instabilidade para o elemento de barra simples é efetuada determinando-se os pontos críticos ao longo da trajetória de equilíbrio em grandes deslocamentos. Para se determinar essas trajetórias são utilizados os algoritmos de Newton-Raphson e arc-length. Este tipo de análise é particul

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40

Calderbank, David M. J. "Geometrical aspects of spinor and twistor analysis." Thesis, University of Warwick, 1995. http://wrap.warwick.ac.uk/37077/.

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This work is concerned with two examples of the interactions between differential geometry and analysis, both related to spinors. The first example is the Dirac operator on conformal spin manifolds with boundary. I aim to demonstrate that the analysis of the Dirac operator is a natural generalisation of complex analysis to manifolds of arbitrary dimension, by providing, as far as possible, elementary proofs of the main analytical results about the boundary behaviour of solutions to the Dirac equation. I emphasise throughout the conformal invariance of the theory, and also the usefulness of the

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41

SIDDIQUE, IFFAT. "Reliability Analysis Considering Material and Geometrical Nonlinearities." Doctoral thesis, Politecnico di Torino, 2014. http://hdl.handle.net/11583/2541689.

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Structures are always subjected to aggressive environment that leads them to various forms of deterioration. Among all these the most important is the corrosion induced mainly by carbonation or chlorides. Majority of these structures exhibits significant nonlinear behavior even at low load levels. Stress strain relationships, tensile cracking, post cracking softening and interaction between concrete, steel and the environment all pave way for the complicated nonlinear response. Almost all of the data available regarding the materials, loads, detrimental phenomenon involves certain amount of un

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42

Tulloss, Jr Robert Stuart. "Optimization of Geometric Parameters for a Deployable Space Structure." Thesis, Virginia Tech, 2021. http://hdl.handle.net/10919/104873.

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Deployable structures are used for many different spacecraft applications like solar arrays, antennas, and booms. They allow spacecraft with large structural components to comply with the volume restrictions of launch platforms. This research optimizes the shape and size of these structural components with both the stowed and deployed configurations in mind. HEEDS, a commercial optimization software, and ABAQUS, a commercial finite element analysis software, are used to evaluate and alter the structure using a single simulation. This makes the design process more efficient than running many di

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43

Raub, Corey Bevan. "Geometric analysis of axisymmetric disk forging." Ohio : Ohio University, 2000. http://www.ohiolink.edu/etd/view.cgi?ohiou1172778393.

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44

Savriama, Yoland. "Geometric morphometric methods for analysis of complex symmetric structures." Thesis, University of Manchester, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.491861.

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Bilateral symmetry is the simplest and most common type of symmetry in organisms and for this reason it has been extensively studied in many biological contexts. Geometric morphometrics is concerned with the quantification of morphological variation in organisms and has been specifically developed for studies of symmetry and asymmetry. Most studies of symmetry have focused on bilaterally symmetric structures (e.g., human faces). However, bilateral symmetry is not the only type of symmetry in biological shapes and other types of symmetry exist as well (e.g., radial symmetry in flowers). So far,

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45

Wong, Chun-kuen, and 黃春權. "Symmetry reduction for geometric nonlinear analysis of space structures." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1997. http://hub.hku.hk/bib/B31214721.

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46

Wong, Chun-kuen. "Symmetry reduction for geometric nonlinear analysis of space structures /." Hong Kong : University of Hong Kong, 1997. http://sunzi.lib.hku.hk/hkuto/record.jsp?B18379734.

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47

JUNIOR, EVANDRO PARENTE. "SENSITIVITY ANALYSIS AND SHAPE OPTIMIZATION OF GEOMETRICALLY NON-LINEAR STRUCTURES." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2000. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=1998@1.

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CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO<br>Este trabalho propõe uma metodologia para a otimização de forma de estruturas geometricamente não-lineares. O objetivo desta metodologia é evitar os problemas de instabilidade apresentados por estruturas otimizadas de acordo com a formulação clássica. Ela foi implementada para problemas bidimensionais e os resultados obtidos na otimização de diferentes estruturas demonstraram o seu sucesso. Utilizando-se conceitos de modelagem geométrica, a forma da estrutura é defini-da através das curvas de seu contorno. Assim, a repre

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48

Sherzad, Rafiullah, and Awrangzib Imamzada. "Buckling and Geometric Nonlinear Stress Analysis : Circular glulam arched structures." Thesis, Linnéuniversitetet, Institutionen för byggteknik (BY), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-54569.

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An arched structure provides an effective load carrying system for large span structures. When it comes to long span roof structures, timber arches are one of the best solutions from both structural and aesthetical point of view. Glulam arched structures are often designed using slender elements due to economic consideration. Such slender cross-section shape increases the risk of instability. Instability analysis of straight members such as beam and column are explicitly defined in Eurocode. However, for instability of curved members no analytical approach is provided in the code, thus some nu

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49

Li, Lingchuan. "Geometrically nonlinear analysis of discretized structures by the group theoretic approach." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0011/NQ40271.pdf.

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50

Hirschler, Thibaut. "Isogeometric modeling for the optimal design of aerostructures." Thesis, Lyon, 2019. http://www.theses.fr/2019LYSEI092.

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Concevoir des structures au regard de leur comportement mécanique est une tâche importante en ingénierie. Cependant, cette phase de conception peut s'avérer longue et fastidieuse lorsque les relations de cause à effet ne sont pas correctement identifiées. Plus spécifiquement, il est généralement difficile d’obtenir la meilleure forme d’une structure (la forme optimale), car cela fait appel à de nombreuses compétences. En effet, des outils avancés pour la modélisation géométrique sont nécessaires pour représenter fidèlement la structure et pour explorer une large variété de formes. A cela s’ajo

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