Experimental Test of the "Isotropic" Approximation for Granular Materials using p=constant Compression

P. Evesque

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Experimental Test of the "Isotropic" Approximation for Granular Materials using p=constant Compression

P. Evesque

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Abstract

Experimental data from axially symmetric compression test at constant mean pressure p on Hostun sand from Bouvard experiments are used to study the validity of an "isotropic" modelling as a function of the density .The isotropic assumption is found to be quite good for loose samples and/or in the range of large pressure. For smaller mean pressure, anisotropic response is observed at few percents of axial deformation. Relation with anisotropic distribution of local force is made. Pacs # : 5.40 ; 45.70 ; 62.20 ; 83.70.Fn

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P. Evesque. 2005-07-07. Experimental Test of the "Isotropic" Approximation for Granular Materials using p=constant Compression. https://arxiv.org/abs/cond-mat/0507174

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