Abstract
Recent studies show that particle shape and angularity has considerable influence on the mechanical behavior of granular materials. In order to numerical investigation of the particle shape on mechanical behavior of granular particles, a program that is based on Discrete Element Method (DEM) has been developed to model semi-real shape of grains. In this way, the real shape of grain is modeled by combining arbitrary number of overlapping spheres, which are connected to each other in a rigid way. To evaluate the influence of angularity on mechanical behavior of sand two assemblies of sands with different angularities containing rounded grains and high angular grains are considered, and several triaxial tests with different confining pressure and friction coefficient are performed on assemblies. The results demonstrate that the angularity of grains is considerably affecting the behavior of soil.
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