Sensitivity of the stress response function to packing preparation
Abstract
A granular assembly composed of a collection of identical grains may pack under different microscopic configurations with microscopic features that are sensitive to the preparation history. A given configuration may also change in response to external actions such as compression, shearing etc. We show using a mechanical response function method developed experimentally and numerically, that the macroscopic stress profiles are strongly dependent on these preparation procedures. These results were obtained for both two and three dimensions. The method reveals that, under a given preparation history, the macroscopic symmetries of the granular material is affected and in most cases significant departures from isotropy should be observed. This suggests a new path toward a non-intrusive test of granular material constitutive properties.
Keywords
Cite
@article{arxiv.cond-mat/0411734,
title = {Sensitivity of the stress response function to packing preparation},
author = {A. P. F. Atman and P. Brunet and J. Geng and G. Reydellet and G. Combe and P. Claudin and R. P. Behringer and E. Clément},
journal= {arXiv preprint arXiv:cond-mat/0411734},
year = {2009}
}
Comments
15 pages, 11 figures, some numerical data corrected, to appear in J. Phys. Cond. Mat. special issue on Granular Materials (M. Nicodemi Editor)