538 Analysis on the internal stress field in particulate composites by using BEM

Abstract

Formulation and some results for the analysis of particulate composite materials undergoing stress induced dilatational phase transformation are presented. Analyses are carried out by using a boundary element method (BEM), which is developed based on integral equations and analytical solutions for ellipsoidal inclusions such as Eshelby's tensor. The homogenization method is then adopted for meso-scale unit cell analyses. Present approach does not require any interior discretizations and is quite efficient even when there are a number of particles in the unit cell. Furthermore, by using present approach, the detailed meso-stress field in particulate composite material can be analyzed and visualized. Some numerical results are presented.