title: Multiple-contact discrete-element model for simulating dense granular media.
abstract: This article presents a new force model for performing quantitative simulations of dense granular materials. Interactions between multiple contacts (MC) on the same grain are explicitly taken into account. Our readily applicable MC-DEM method retains all the advantages of discrete-element method simulations and does not require the use of costly finite-element methods. The new model closely reproduces our recent experimental measurements, including contact force distributions in full 3D, at all compression levels of the packing up to the experimental maximum limit of 13%. Comparisons with classic simulations using the nondeformable spheres approach, as well as with alternative models for interactions between multiple contacts, are provided. The success of our model, compared to these alternatives, demonstrates that interactions between multiple contacts on each grain must be included for dense granular packings.
authors: INRIA, 200 Avenue de la Vieille Tour, 33405 Talence, France.|Department of Physics & Center for Nonlinear and Complex Systems, Duke University, P.O. Box 90305, Durham, North Carolina 27708-0305, USA.
authors: Nicolas
authors: N
authors: Brodu
authors: Department of Physics & Center for Nonlinear and Complex Systems, Duke University, P.O. Box 90305, Durham, North Carolina 27708-0305, USA.|Laboratory of Physical Chemistry and Colloid Science, Wageningen University, P. O. Box 8038, 6700EK Wageningen, The Netherlands.
authors: Joshua A
authors: JA
authors: Dijksman
authors: Department of Physics & Center for Nonlinear and Complex Systems, Duke University, P.O. Box 90305, Durham, North Carolina 27708-0305, USA.
authors: Robert P
authors: RP
authors: Behringer