The Discrete Element Method (DEM) is a powerful instrument when simulating the behavior of bulk solids such as pellets or powders. However, the quality of the simulation results is directly related to the simulation and material parameters used. The goal of this contribution is to describe a method of parameterization to be used in simulating the compression of plastic goods in form of bulk solids. Particular attention is paid to the coefficient of restitution (COR), as well as to the yield strength of the materials. The parameters under investigation have been determined such that identical pressure-deformation curves could be obtained for the comparison between the simulation and the experimental results. The parameters thus determined can, under certain circumstances, also be used later in simulations of conveyance processes with pressure buildup. Such simulations are important to better understand the buildup of pressure in high-speed single-screw extruders.
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