Effect of boundaries on the force distributions in granular media

Details Effect of boundaries on the force distributions in granular media Effect of boundaries on the force distributions in granular media

2002-04-12

arxiv.org/abs/cond-mat/0204277v1

Phys. Rev. E 67, 030302 (2003).

Physics

Condensed Matter

Disordered Systems and Neural Networks

4 pages, 4 figures

Scientific paper

10.1103/PhysRevE.67.030302

The effect of boundaries on the force distributions in granular media is illustrated by simulations of 2D packings of frictionless, Hertzian spheres. To elucidate discrepancies between experimental observations and theoretical predictions, we distinguish between the weight distribution {\cal P} (w) measured in experiments and analyzed in the q-model, and the distribution of interparticle forces P(f). The latter one is robust, while {\cal P}(w) can be obtained once the local packing geometry and P(f) are known. By manipulating the (boundary) geometry, we show that {\cal P}(w) can be varied drastically.

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