A Linear Complementarity formulation of rate-independent finite-strain elastoplasticity. Part I: Algorithm for numerical integration
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- 作者：Andrea Bassi<sup>asup> ; Nikolaos Aravas<sup>bsup><sup> ; sup><sup>csup> ; Francesco Genna<sup>asup><sup> ; sup><sup>francesco.genna@ing.unibs.itsup>
- 关键词：Singular or multi-surface plasticity models ; Large strains ; Numerical integration
- 刊名：European Journal of Mechanics - A/Solids
- 出版年：2012
- 出版时间：September-October, 2012
- 年：2012
- 卷：35
- 期：Complete
- 页码：119-127
- 全文大小：354 K
文摘
A methodology for the numerical integration of rate-independent, elastic-plastic finite-strain models is developed. The methodology is based on the idea of local linearization of the yield surface that was proposed in , adopted as the basis for an integration scheme in , and developed further in , so far for small-strain problems only. The proposed algorithm is based on the solution of a local Linear Complementarity Problem and is suited particularly for plasticity models that involve yield surfaces with singular points (corners, edges, apexes, etc.).