Search for dissertations about: "elasticity"

Showing result 1 - 5 of 282 swedish dissertations containing the word elasticity.

  1. 1. 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; Karlstads universitet.; [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

  2. 2. 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;

    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

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

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Ali Dorostkar; Uppsala universitet.; Uppsala universitet.; [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

  4. 4. The dynamics in harvested populations

    University dissertation from Department of Biology, Lund University

    Author : Anders Wikström; Lund University.; Lunds universitet.; [2013]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; fluctuations; temporal; state-space; Harvest; cod; vendace; elasticity; stage-structured; stochastic; growth-rate; Baltic Sea; Bothnian Bay;

    Abstract : We are interested in the effect of harvesting on population fluctuations and for that purpose we develop and analyze an age-structured model where recruitment is a stochastic process and the adult segment of the population is harvested. When a constant annual harvest is taken the coefficient of variation of the adult population increases for most parameter values due to the age truncation effect, i. READ MORE

  5. 5. Power to the people electricity demand and household behavior

    University dissertation from Umeå : Umeå universitet

    Author : Mattias Vesterberg; Umeå universitet.; [2017]
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; electricity demand; real-time pricing; demand flexibility; elasticity; appliance-level data; end-use; media; contract choice; de-regulated market; household behavior; intermittent electricity production; efficiency; imperfect information;

    Abstract : Paper [I] Using a unique and highly detailed data set on energy consumption at the appliance-level for 200 Swedish households, seemingly unrelated regression (SUR)-based end-use specific load curves are estimated. The estimated load curves are then used to explore possible restrictions on load shifting (e.g. READ MORE