Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 73 for “"Linear elasticity"”.
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Point Singularities in Linear Elasticity
Made available in DSpace on 2014-12-12T00:25:50Z (GMT). No. of bitstreams: 1 7310033.pdf: 661275 bytes, checksum: cf097f6a66602e8f99669d6fdb24ef80 (MD5) Previous issue date: 1972
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The Generalized Scalar Wave Equation in Linear Elasticity
Made available in DSpace on 2014-12-14T14:42:07Z (GMT). No. of bitstreams: 1 7524361.pdf: 1011141 bytes, checksum: 7b81ba880900fe81863868c6cd50b2f7 (MD5) Previous issue date: 1975
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Some crack problems in linear elasticity / by W.T. Ang
Errata inserted
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Development of discontinuous Galerkin method for nonlocal linear elasticity
… value problems in small strain, non-local linear elasticity is proposed. The underlying theory corresponds to the phenomenological strain-gradient theory developed by Fleck and Hutchinson within the Toupin-Mindlin framework. The single-field displacement method obtained enables the …
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Reduced basis output bounds for linear elasticity : application to microtruss structures
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2001.
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Stress singularities, annihilations and invisibilities induced by polygonal inclusions in linear elasticity
… that the singular stress ?eld predicted by the linear elastic solution for the rigid inclusion model can be generated in reality and with great accuracy within a material, attention is devoted then in achieving the out-of-plane response of an in?nite plane containing polygonal and …
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A Quadratic Non-Linear Elasticity Formulation for the Dynamic Behaviour of Fluid-Loaded Structures
… significant and cannot be described by a purely linear analysis. We present a new formulation to model these larger displacements. By extending the standard modal decomposition technique for linear structural analysis, the governing equations and boundary conditions are updated to account for the …
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Convergent finite element approximations for problems of near-incompressible and near-inextensible transversely isotropic linear elasticity
… value problem for transversely isotropic linear elastic bodies. The main objective is the development and implementation of low-order finite element methods that are uniformly convergent in the incompressible and inextensible limits. The first step in the investigation is a study of the …
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An effective overlapping finite element method : the method of finite spheres for three-dimensional linear elasticity problems
… complex domains, severe element distortion in nonlinear analysis with large strain effects, and modeling problems involving discontinuities and singularities which require mesh alignment and refinement. Substantial research efforts have been focused on addressing these issues, resulting in the …
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Projeto de reforço de pavimentos rodoviários e aeroportuários pelo método da resiliência: uma nova versão do programa TECNAPAV
… is based on models developed from the Theory of Elasticity, either existing solutions for linear elasticity or from non-linear elasticity. The computer program TECNAPAV used for pavement management system was extended in order to take into account loads heavier than the standard 80kN-axle load of …
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On the boundary integral equation method for the solution of some problems for inhomogeneous media / Mohammad Ivan Azis.
… (BVPs), the boundary value problem of static linear elasticity, and the calculation of the solution of the initial-boundary value problem of non-linear heat conduction for anisotropic media.
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The modelling of natural fibre-reinforced composites using a multi-scale methodology
A multi-scale methodology for small strain linear elasticity is presented in this thesis. The homogenisation process is discussed in general, with particular attention to the required boundary constraints on the micro-domain and the extraction of an effective elastic modulus. For the case of a …
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Time-dependent adjoint-based optimization of photonic crystals and metamaterials using a stabilized finite element method
… To reflect the design changes on the mesh, linear elasticity is used to adapt interior mesh points to boundary modifications. The cost function used in this design attempts to shift the band gap of the photonic crystals to desired frequency ranges. Results demonstrate a band gap shift from …
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Resultados sobre a forma fraca do princípio de Saint-Venant
The present paper, cornpletely restricted to Linear Elasticity, is presented in three chapters. In the first chapter, a review on Saint-Venant' s problem (torsion and flexion of beams) is made and the necessity of the so-called "Saint-Venant's Hypotesis" is indicated. The generalizations of the …
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Some Formation Problems for Linear Elastic Materials
Some equations of linear elasticity are developed, including those specific to certain actuator structures considered in formation theory. The invariance of the strain-energy under the transformation from rectangular to spherical coordinates is then established for use in two specific formation …
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Multiscale methods for fabrication design
… for problems such as high-resolution non-linear elasticity or dynamics with friction and impact. For simpler problems such as linear elasticity, where accurate simulation is available, the simulation resolution handled by desktop workstations is still orders of magnitudes below available …
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Análise elasto-plástica da propagação de trincas não-passantes em estruturas de superfície utilizando elementos escalares
… The analysis is performed considering linear elasticity resulting in the avaluation of the stress intensity factor KI. For the non linear elasto-plastic case, the release rate potential energy in the crack, known as J-integral is evaluated. ln both cases, the crack opening displacements …
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A finite strain theory, and its application to the plane stress response of polyurethane
… to bridge the gap that exists between the linear and nonlinear theories of Elasticity. The theory is applied to the solution of a hubbed, clamped, circular plate made of polyurethane whose hub is subjected to a "large" axi~symmetrioc twist. This particular problem is attacked in the …
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The State-Based Peridynamic Lattice Model
… close-packed lattice. We present a SPLM linear-elasticity and plasticity model that has been derived from the classical model. We then conclude this thesis with several benchmark examples and a look forward to future research.
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