Effect of Particle Shape on Parameter Calibration for a Discrete Element Model for Mining Applications

The discrete element method (DEM) has been widely employed to model processes in different industries, such as mining, agriculture, pharmaceuticals, and food. One of the main lines research, which authors propose several approaches, is calibration parameters. Bulk (BCA) a common approach used that does not necessarily represent individual behavior each particle. On other hand, direct measurement (DMA) another some cases. This work presents comparison between DEM parameters with non-cohesive spherical polyhedral particles using combination bulk calibration. BCA calibrate friction DMA characterize shape coefficient restitution contact particles. Experimental data from Draw Down Tests are Numerical optimization conducted by altering coefficients regarding objective variables mass flow, final mass, shear angle, angle repose. Quartz, granite, coal calibrated, obtaining good agreement experimental results. influence particle tested, proving more complex obtain better results for analyzed case.