Force network ensemble: a new approach to static granular matter

An ensemble approach for force distributions in static granular packings is developed. This framework is based on the separation of packing and force scales, together with an a priori flat measure in the force phase space under the constraints that the contact forces are repulsive and balance on eve...

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Bibliographic Details
Published in:Physical review letters 2004-02, Vol.92 (5), p.054302-054302, Article 054302
Main Authors: Snoeijer, Jacco H, Vlugt, Thijs J H, van Hecke, Martin, van Saarloos, Wim
Format: Article
Language:English
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Summary:An ensemble approach for force distributions in static granular packings is developed. This framework is based on the separation of packing and force scales, together with an a priori flat measure in the force phase space under the constraints that the contact forces are repulsive and balance on every particle. We show how the formalism yields realistic results, both for disordered and regular triangular "snooker ball" configurations, and obtain a shear-induced unjamming transition of the type proposed recently for athermal media.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.92.054302