Search for dissertations about: "elasticity"

Showing result 1 - 5 of 302 swedish dissertations containing the word elasticity.

  1. 1. Application of Differential Geometry to Elasticity and Corresponding Discrete Models

    Author : Nina Lautersztajn-S.; [2001]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; mechanical systems; differential geometry; isoparametric four-node elements; Lie groups; non-linear elasticity; elasticity; finite element method;

    Abstract : The amazing development in technology and industry during the last half of the twentieth century has opened totally new research fields. One of them is computational mechanics. Suddenly very complex, three-dimensional nonlinear engineering problems could be solved as a consequence of explosive advances in computers and numerical schemes. READ MORE

  2. 2. Goal-Oriented Adaptive Finite Element Analysis in Computational Material Mechanics

    Author : Fredrik Larsson; [2003]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; visco-plasticity; a posteriori error estimation; thermo-elasticity; mesh refinement; adaptivity; FEM; elasticity;

    Abstract : This thesis is concerned with error control in computational material mechanics. A posteriori error estimation and adaptivity for finite element discretizations is investigated. Based on the technique of solving a dual problem, it is possible to control the accuracy of arbitrary quantities. READ MORE

  3. 3. Solution to boundary-contact problems of elasticity in mathematical models of the printing-plate contact system for flexographic printing

    University dissertation from Fakulteten för teknik- och naturvetenskap

    Author : Nikolai Kotik; Yury Shestopalov; Stig Larsson; [2007]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; boundary-contact problem; elasticity; integral equation; approximate decomposition; MATHEMATICS Applied mathematics; MATEMATIK Tillämpad matematik; Matematik; Mathematics;

    Abstract : Boundary-contact problems (BCPs) are studied within the frames ofclassical mathematical theory of elasticity and plasticityelaborated by Landau, Kupradze, Timoshenko, Goodier, Fichera andmany others on the basis of analysis of two- and three-dimensionalboundary value problems for linear partial differential equations.A great attention is traditionally paid both to theoreticalinvestigations using variational methods and boundary singularintegral equations (Muskhelishvili) and construction of solutionsin the form that admit efficient numerical evaluation (Kupradze). READ MORE

  4. 4. Model Adaptivity in Elasticity

    University dissertation from Göteborg : Chalmers University of Technology

    Author : David Heintz; Göteborgs universitet.; Gothenburg University.; [2008]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; finite element method; dimension reduction; a posteriori error; model error; model adaptivity; model error; a posteriori error; dimension reduction; model adaptivity;

    Abstract : We consider model adaptivity in elasticity for dimensionally reduced forms, and shall treat different conceptual approaches. The basic idea, however, is to adaptively refine, not only the computational mesh, but also the underlying mathematical formulation. READ MORE

  5. 5. Analysis and Implementation of Preconditioners for Prestressed Elasticity Problems Advances and Enhancements

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Ali Dorostkar; Maya Neytcheva; Thomas Huckle; [2017]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; FEM; Saddle point matrix; Preconditioning; Schur complement; Generalized Locally Toeplitz; Prestressed elasticity; Scientific Computing; Beräkningsvetenskap;

    Abstract : In this work, prestressed elasticity problem as a model of the so-called glacial isostatic adjustment (GIA) process is studied. The model problem is described by a set of partial differential equations (PDE) and discretized with a mixed finite element (FE) formulation. READ MORE