抄録
In order to predict the behavior of the growth of microscopic voids which causes fracture in ductile metal materials, finite element analysis is valid. However, the large number of elements are needed to analyze model with voids distributed randomly. Therefore, the model which describes the effect of such voids by internal state variables is required. In this study, finite element analysis is performed using anisotropic Gurson's yield function which incorporates the damage tensor. And validation will be carried out by comparing with experimental results under uniaxial stress and analytical results under biaxial stress. As a result of comparison, it was found that the proposed mesoscopic model well describes the macroscopic deformation of perforated sheets.
