Phys. Rev. Lett. 80, 1340 - 1343 (1998)Force Correlations and Arch Formation in Granular Assemblies |
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Mario Nicodemi
Dipartimento di Fisica, Universitá di Napoli “Frederico II,” INFM and INFN Sezione di Napoli, Mostra d'Oltremare, Pad. 19, 80125, Italy
P.M.M.H. Ecole de Physique et Chimie Industrielles, 10, rue Vauquelin, 75231 Paris CEDEX 05, France
Received 8 July 1997
In the context of a simple microscopic schematic scalar model we study the effects of spatial correlations in force transmission in granular assemblies. We show that the parameters of the normalized weight distribution function, P(v)∼vαexp(-v/φ), strongly depend on the spatial extensions, ξV, of such correlations. In particular, we evaluate the functions φ(ξV) and α(ξV). If ξV→∞ then φ∼ξV and weights are power law distributed.
©1998 The American Physical Society
URL: http://link.aps.org/abstract/PRL/v80/p1340
DOI: 10.1103/PhysRevLett.80.1340
PACS: 83.70.Fn, 46.10.+z
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