Stress and Strain in Flat Piling of Disks

Details Stress and Strain in Flat Piling of Disks Stress and Strain in Flat Piling of Disks

2003-03-10

arxiv.org/abs/cond-mat/0303160v1

Physics

Condensed Matter

Soft Condensed Matter

9 pages, 1 table, 8 figures, and 2 pages for captions of figures

Scientific paper

10.1143/JPSJ.73.926

We have created a flat piling of disks in a numerical experiment using the Distinct Element Method (DEM) by depositing them under gravity. In the resulting pile, we then measured increments in stress and strain that were associated with a small decrease in gravity. We first describe the stress in terms of the strain using isotropic elasticity theory. Then, from a micro-mechanical view point, we calculate the relation between the stress and strain using the mean strain assumption. We compare the predicted values of Young's modulus and Poisson's ratio with those that were measured in the numerical experiment.

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