Application of Artificial Damping Method for Local Instability

DOI

Bibliographic Information

Other Title
  • 人工粘性法による局所不安定問題の解析

Description

The arc-length method realizes the stable analysis process under the global load control. If the analysis process traces unstable paths under the global load-displacement response with negative stiffness, the arc-length method is effectively usable. However, if the instability is localized (e.g., surface wrinkling, material instability, or local buckling), there will be a local transfer of strain energy from one part of the model to neighbouring parts, and global solution methods may not work. Abaqus provides an automatic mechanism for stabilizing unstable quasi-static problems through the automatic addition of volume-proportional damping to the model. Viscous forces are added to the global equilibrium equations. When local instability occurs, the deformation rate of that portion begins to increase, and consequently, locally released strain energy is dissipated due to the appended damping effect.

Journal

Keywords

Details 詳細情報について

  • CRID
    1390282680570815488
  • NII Article ID
    130004604663
  • DOI
    10.11345/japannctam.60.0.118.0
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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