A giant overshoot effect in the Janssen granular column

G. Ovarlez; C. Fond; E. Clément

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arXiv · cond-mat/0212228

A giant overshoot effect in the Janssen granular column

G. Ovarlez·C. Fond·E. Clément

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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.

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G. Ovarlez, C. Fond, E. Clément. 2002-12-10. A giant overshoot effect in the Janssen granular column. https://arxiv.org/abs/cond-mat/0212228

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