215102 多結晶塑性解析における結晶粒形状の巨視的材料特性への影響(OS08 マルチディシプリナリ・デザイン科学1(組織と変形のマルチスケール解析),オーガナイズド・セッション)

概要

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The mechanical behaviors of FCC polycrystal are numerically evaluated and the effect of crystal grain shape on macroscopic material property is investigated. The homogenization method, which combines the crystal and macroscopic scales, is introduced to include the effect of crystalline scale behaviors. In the homogenization method, a minimum periodic unit of microstructure to represent the macroscopic property has to be determined, and this unit called as unit cell. There is no unit cell in realistic metals because the actual metals have no periodicity; however, if we can find a representative volume element to reproduce macroscopic properties of a material, it can be employed as a unit cell. In this paper, the material behavior with irregular shaped grains is analyzed, and the effect of the grain shape is investigated.
一般社団法人日本機械学会の論文
2011-03-17