Compaction dynamics of a granular media under vertical tapping
Statistical Mechanics
2009-11-07 v1 Soft Condensed Matter
Abstract
We report new experimental results on granular compaction under consecutive vertical taps. The evolution of the mean volume fraction and of the mean potential energy of a granular packing presents a slow densification until a final steady-state, and is reminiscent to usual relaxation in glasses via a stretched exponential law. The intensity of the taps seems to rule the characteristic time of the relaxation according to an Arrhenius's type relation >. Finally, the analysis of the vertical volume fraction profile reveals an almost homogeneous densification in the packing.
Cite
@article{arxiv.cond-mat/0210297,
title = {Compaction dynamics of a granular media under vertical tapping},
author = {P. Philippe and D. Bideau},
journal= {arXiv preprint arXiv:cond-mat/0210297},
year = {2009}
}
Comments
7 pages, 4 figures, to appear in Europhysics Letters