Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2005-03-17
Physics
Condensed Matter
Statistical Mechanics
4 pages, 3 figures, 1 table, discussion and conclusion updated, to appear in the proceedings of Traffic and Granular Flow 2005
Scientific paper
We study the geometry of forces in some simple models for granular stackings. The information contained in geometry is complementary to that in the distribution of forces in a single inter-particle contact, which is more widely studied. We present a method which focuses on the fractal nature of the force network and find good evidence of scale invariance. The method enables us to distinguish universality classes characterized by critical exponents. Our approach can be applied to force networks in other athermal jammed systems.
Nienhuis Bernard
Ostojic Srdjan
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