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. The subject of this paper is a visualization tool which may prove helpful for understanding the highly complex responses of granular systems during shear tests. The motivation of such approach is to face the challenge related to the micro scale contact forces in a granular system. The Discrete Element Method (DEM) was used to simulate shear testing on an assembly of spherical glass beads. All simulations were performed using the 3D virtual laboratory SiGran. The macro-scale response of the granular system is presented, including energy and force distributions. Two particle-size distributions were considered in the study to validate the virtual approach. The influence of the contact model is also a part of this study.

A MORE COMPREHENSIVE MODELING OF CONTACT FORCE DURING SHEAR TESTING USING DEM