Abstract
Distinct Element Method (DEM) based on simple principles has been worthy of notice that it is able to simulate the deformation-stress behavior of granular materials. However, quantitative verifications have not been sufficiently done, although various qualitative results have been presented. It is a serious problem for DEM from the viewpoint of the quantitative prediction that is one of important tasks in geotechnical engineering field. Numerical experiments on biaxial isotropic compression have been investigated. It was found using global damping as Dynamic Relaxation Method (DR) that the simulated stress and strain smoothly and rapidly converge on the theoretical values for a regular composition model with one particle size, and that initial void ratios can be uniquely obtained depending on the frictional angle between particles for a composition model with different particle sizes.
