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

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

2005-07-07

arxiv.org/abs/cond-mat/0507174v1

Poudres & Grains 12, 11-16, (2001), ISSN 1257-3957

Physics

Condensed Matter

Soft Condensed Matter

6 pages + 1 page, 1 figure

Scientific paper

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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