MC-DEM: a novel simulation scheme for modeling dense granular media
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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 method retains all
the advantages of discrete element method (DEM) 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 up to the experimental maximum limit of 13\%. Comparisons with
traditional non-deformable spheres approach are provided, as well as with alternative
models for interactions between multiple contacts. 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.
Type
Journal articlePermalink
https://hdl.handle.net/10161/10948Collections
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Show full item recordScholars@Duke
Robert P. Behringer
James B. Duke Professor of Physics
Dr. Behringer's research interests include granular materials: friction, earthquakes,
jamming; nonlinear dynamics; and fluids: Rayleigh-Benard convection, the flow of thin
liquid films, porous media flow, and quantum fluids. His studies focus particularly
on experiments (with some theory/simulation) that yield new insights into the dynamics
and complex behavior of these systems. His experiments involve a number of highly
novel approaches, including the use of photoelasticity for probing granular
This author no longer has a Scholars@Duke profile, so the information shown here reflects
their Duke status at the time this item was deposited.

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