2002/12/10 by G. Ovarlez, Guillaume Ovarlez, C. Fond +6
Engineering · Physics and Astronomy · #Geotechnical Engineering and Soil Mechanics #Geotechnical and Geomechanical Engineering #Granular flow and fluidized beds #cond-mat.mtrl-sci #cond-mat.soft
paper · pdf · doi:10.48550/arxiv.cond-mat/0212228
arxiv created 2002/12/10 · arxiv updated 2009/11/30
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.