Jamming and Fluctuations in Granular Drag
Disordered Systems and Neural Networks
2009-10-31 v1
Abstract
We investigate the dynamic evolution of jamming in granular media through fluctuations in the granular drag force. The successive collapse and formation of jammed states give a stick-slip nature to the fluctuations which is independent of the contact surface between the grains and the dragged object -- thus implying that the stress-induced collapse is nucleated in the bulk of the granular sample. We also find that while the fluctuations are periodic at small depths, they become "stepped" at large depths, a transition which we interpret as a consequence of the long-range nature of the force chains.
Cite
@article{arxiv.cond-mat/9912336,
title = {Jamming and Fluctuations in Granular Drag},
author = {I. Albert and P. Tegzes and B. Kahng and R. Albert and J. G. Sample and M. Pfeifer and A. -L. Barabasi and T. Vicsek and P. Schiffer},
journal= {arXiv preprint arXiv:cond-mat/9912336},
year = {2009}
}
Comments
7 pages, 4 figures, RevTeX