215201 セルの内部応力場を介して転位パターニングと結晶変形を連成させたマルチフィジックスシミュレーション(OS08 マルチディシプリナリ・デザイン科学2(材料と流体のマルチフィジックス解析),オーガナイズド・セッション)

概要

論文の詳細を見る
In this report, we conduct a multi-physics simulation coupling dislocation patterning with crystal deformation. We use reaction-diffusion equations for dislocation patterning of cell and subgrain. We derive interaction equations between dislocation field and internal stress field induced by long-range dislocation structure through the lattice misfit due to the existence of dislocations. At this time, a number fraction of immobile dislocations assume a role of an order parameter for dislocations. Moreover, we develop a multi-physics crystal plasticity model based on dislocation patterning. Then we carry out two-dimensional FE-FD simulation for a compression of FCC polycrystal plate using the present model.
一般社団法人日本機械学会の論文
2011-03-17