ケイ素鋼薄板に生じる不均質変形 : 結晶すべり理論によるbcc単結晶体の解析

概要

論文の詳細を見る
FEM simulation of the strain localization in sheet metals is performed using crystal plasticity theory. The constitutive relations formulated by Asaro et al. are used, in which the rate-dependent property is included so as to determine active slip systems uniquely for a strain increment. The strain localization which appears in a silicon iron sheet under uniaxial tension is calculated. All 48 slip systems of the bcc crystal are considered, and isotropic hardening for the relationship between resolved shear stress and strain is assumed. Strain localization is affected by the combination of the activated slip systems. The analytical results are compared with those of experiments. The dependence of localized deformation mode on initial lattice orientation is predicted well by numerical results.
一般社団法人日本機械学会の論文
1995-10-25