Desired or not, particle breakage can occur when dealing with particulate materials in industry. For cases in which breakage severely influences the flow of the material, the only viable option is to describe it within the DEM environment. Several powerful approaches have been proposed over the years, but only very few are suitable to be used in large-scale simulations.
The presentation shows one such model that has been implemented in Altair EDEM to describe body breakage of brittle materials. It is based on a novel stochastic particle replacement approach involving spheres. It accounts for variability and size-dependence of fracture energies, besides weakening when particles do not break and fragment size distribution dependent on stressing energy. Results from model verification and validation in EDEM are presented, which demonstrate its high fidelity, besides examples of application to predict breakage in selected crushers.
Presented as part of the virtual ATCx Discrete Element Method in November 2020.
Speaker: Prof. Marcelo Tavares, University Federal de Rio de Janeiro
Duration: 25 minutes