Sökning: "Elasticity"
Visar resultat 1 - 5 av 357 avhandlingar innehållade ordet Elasticity.
1. Application of Differential Geometry to Elasticity and Corresponding Discrete Models
Sammanfattning : 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. LÄS MER
2. Goal-Oriented Adaptive Finite Element Analysis in Computational Material Mechanics
Sammanfattning : 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. LÄS MER
3. Solution to boundary-contact problems of elasticity in mathematical models of the printing-plate contact system for flexographic printing
Sammanfattning : 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). LÄS MER
4. Model Adaptivity in Elasticity
Sammanfattning : 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. LÄS MER
5. Analysis and Implementation of Preconditioners for Prestressed Elasticity Problems : Advances and Enhancements
Sammanfattning : 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. LÄS MER