518 結晶有限要素法に基づく材料試験シミュレータの開発(S03-1 結晶塑性解析,S03 有限要素法の最近の動向/メッシュフリー法)

概要

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A three-dimensional finite element method for polycrystalline plasticity problems based on the homogenization method has been developed. The homogenization method is one of the useful procedures to combine behaviors in a macro-scale and a micro-scale with periodical structure satisfying physical and mathematical compatibility between those scales. Polycrystalline metals are assumed to have periodical microstructure, therefore, a three-dimensional polycrystalline model is introduced into the homogenization method. In the present method, each material point in the element is considered to be a polycrystalline aggregate of a number of FCC grains where the Taylor theory of crystal plasticity is assumed. It is shown that the proposed method can evaluate macroscopic material properties only with microscopic material information.
社団法人日本機械学会の論文
2005-09-18