A giant overshoot effect in the Janssen granular column
Soft Condensed Matter
2007-05-23 v1 Materials Science
Abstract
We present new experimental results on the mechanical behavior of static granular assemblies confined in a vertical column. Our measurements confirm, for the first time, the universal Janssen's scaling for the stress saturation curve. We show consequently, in the context of isotropic elasticity, a relation between the Poisson ratio and granular packing fraction. Moreover, using a systematic study of the overshoot effect created by a top mass equal to the saturation mass, we show behaviors reproduced qualitatively by isotropic elastic materials but in the case of a granular assembly of a spectacular amplitude. These experimental results are strong tests for any theory of granular matter.
Keywords
Cite
@article{arxiv.cond-mat/0212228,
title = {A giant overshoot effect in the Janssen granular column},
author = {G. Ovarlez and C. Fond and E. Clément},
journal= {arXiv preprint arXiv:cond-mat/0212228},
year = {2007}
}