Large Deformation Contact Analysis Method based on Warmstarting Interior-point Method

DOI
  • SHONO Tatsuhiro
    Department of Human and Engineered Environmental Studies, Graduate School of Frontier Sciences, The University of Tokyo
  • INAGAKI Kazuhisa
    FUJITSU Advanced Technologies Ltd.
  • HASHIMOTO Gaku
    Department of Human and Engineered Environmental Studies, Graduate School of Frontier Sciences, The University of Tokyo
  • OKUDA Hiroshi
    Department of Human and Engineered Environmental Studies, Graduate School of Frontier Sciences, The University of Tokyo

Bibliographic Information

Other Title
  • ウォームスタート付き内点法に基づく大変形接触解析手法

Description

<p>Recently, primal-dual interior-point method (IPM) are focused as an efficient strategy for large scale contact problems. Contact algorithm based on IPM, however, is difficult to apply finite deformation problems. These problems should be divided into some loading steps and slave nodes approach master surface to very close. Too strong contact reaction force then occurs at the beginning of Newton-Raphson (NR) loop in a loading step. This force causes instability of computation. In this paper, we present contact algorithm based on IPM with warm-start method for solving this problem. Contact constraints are relaxed by additional variables. We solve some problems, including a large deformation problem, and compare the number of NR iteration to investigate convergence of contact analysis. As a result, we find that the proposed method improves convergence of contact analysis from standard IPM and conventional active set method.</p>

Journal

Keywords

Details 詳細情報について

  • CRID
    1390001288049544448
  • NII Article ID
    130007430189
  • DOI
    10.11421/jsces.2018.20180009
  • ISSN
    13478826
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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