Modeling relaxation and jamming in granular media
Soft Condensed Matter
2009-10-31 v1 Statistical Mechanics
Abstract
We introduce a stochastic microscopic model to investigate the jamming and reorganization of grains induced by an object moving through a granular medium. The model reproduces the experimentally observed periodic sawtooth fluctuations in the jamming force and predicts the period and the power spectrum in terms of the controllable physical parameters. It also predicts that the avalanche sizes, defined as the number of displaced grains during a single advance of the object, follow a power-law, , where the exponent is independent of the physical parameters.
Cite
@article{arxiv.cond-mat/0011187,
title = {Modeling relaxation and jamming in granular media},
author = {B. Kahng and I. Albert and P. Schiffer and A. -L. Barabasi},
journal= {arXiv preprint arXiv:cond-mat/0011187},
year = {2009}
}