Compaction and mobility in randomly agitated granular assemblies
软凝聚态物质
2007-05-23 v1
摘要
We study the compaction and mobility properties of a dense granular material under weak random vibration. By putting in direct contact millimetric glass beads with piezoelectric transducers we manage to inject energy to the system in a disordered manner with accelerations much smaller than gravity, resulting in a slow compaction dynamics and no convection. We characterize the mobility inside the medium by pulling through it an intruder grain at constant velocity. We present an extensive study of the relation between drag force and velocity for different vibration conditions and sizes of the intruder.
引用
@article{arxiv.cond-mat/0504636,
title = {Compaction and mobility in randomly agitated granular assemblies},
author = {G. Caballero and J. Lanuza and E. Clement},
journal= {arXiv preprint arXiv:cond-mat/0504636},
year = {2007}
}
备注
4 pages, 6 figures, to appear in the proceedings of Powders and Grains 2005