Sökning: "continuum"

Visar resultat 26 - 30 av 507 avhandlingar innehållade ordet continuum.

  1. 26. Computational topology optimization in continuum mechanics

    Författare :Thomas Borrvall; Martin P. Bendsøe; Linköpings universitet; []
    Nyckelord :;

    Sammanfattning : This dissertation concerns theoretical and computational methodologies in topology optimization in continuum mechanics.A general procedure for treating problems of this kind starts with the establishment of a well-posed continuum problem formulation, in the sense that one can prove existence of at least one solution to the problem. LÄS MER

  3. 27. Continuum Mechanics Modelling of Corrugated Board

    Författare :Ulf Nyman; Institutionen för byggvetenskaper; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Material technology; assumed natural strain shell; failure criterion; lifetime; reliability; moisture transport; sorption hysteresis; corrugated board; hygro-elasticity; Materiallära; materialteknik;

    Sammanfattning : The storage of compressive loaded boxes in an environment with naturally varying humidity is a practical issue in corrugated board employment. Time dependent variables such as moisture content, strain fields, stress fields and material strength play important roles for the time to failure. LÄS MER

  4. 28. Continuum sensitivity based shape and material optimization for microwave applications

    Författare :Yongtao Yang; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; gradient method; adjoint problem; optimization; radar cross section; continuum design sensitivity;

    Sammanfattning : .... LÄS MER

  5. 29. Continuum models and numerical methods for fretting

    Författare :Peter Ireman; Linköpings universitet; []
    Nyckelord :;

    Sammanfattning : This study is concerned with continuum models and numerical methods for wear, frictional heat and damage. Of special interest are so called fretting phenomena. Fretting occurs when two bodies in contact experience small periodic, relative motion which leads to wear and the promoted initiation of fatigue cracks. LÄS MER

  7. 30. Nonlinear localization in discrete and continuum systems : applications for optical waveguide arrays

    Författare :Michael Öster; Linköpings universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP;

    Sammanfattning : An introcludion to the formation of coherent structures in spatially discrete and continuous systems is given. Of special interest is the phenomenon of nonlinear localization, where the self-focusing of an excitation is balanced by a dispersive process. LÄS MER