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Molecular-dynamics force models for better control of energy dissipation in numerical simulations of dense granular
L Pournin1, Th M Liebling, A Mocellin
1EPFL Swiss Federal Institute of Technology, CH-1015 Lausanne, Switzerland. lionel.pournin@gmx.fr
Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|January 22, 2002
Abstract:
We first describe the three-dimensional extension of the molecular-dynamics models for granular media simulations. We then discuss the known energy dissipation problem occurring when simulating dense granular media with the usual molecular-dynamics forces models. We finally propose a force model able to control the energy dissipation in the multiparticle contact situations typical to dense granular media, together with appropriate numerical results.