ひずみ経路の変更に伴う塑性異方性主軸の回転

概要

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In the plastic deformation, the material anisotropies have a great influence on the deformation capacity especially in the change of strain path. The anisotropies of sheet metals are caused from the texture developed by a cold rolling process. Because the strength of the texture is different from that of the surrounding material, we assume that the principal axes of anisotropies do not move similarly to the material fiber. According to this assumption, a dynamical model of the principal axes is introduced by using a dumping factor to the motion of the material fiber. Furthermore, some neumerical integrations of this dynamic equation are shown in connection with the change of strain path. Finally, an identification method with the revolution angle of principal axes is proposed by investigating the distribution of r-values with respect to the tension directions.
一般社団法人日本機械学会の論文
2001-01-25