Abstract
To investigate the quantitative applicability of the distinct element method (DEM) to stress-strain behavior of granular materials, direct shear box tests and biaxial compression tests on granular assemblies of aluminium rods are compared with DEM. And using the analytical results, the stress ratio versus strain increment ratio relation on the “mobilized plane” is investigated from the microscopic points of view. The conclusions can be summarized in the followings. (1) DEM can be a useful tool for research into the microscopic mechanism of the behavior of granular materials. (2) On the “mobilized plane”, the stress ratio and the strain increment ratio can be linked respectively through the average value of interparticle contact angle and the stress ratio can be linearly related to the strain increment ratio.
