Effect of boundaries on the force distributions in granular media

Jacco H. Snoeijer; Martin van Hecke; Ellak Somfai; Wim van Saarloos

doi:10.1103/physreve.67.030302

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Effect of boundaries on the force distributions in granular media

Jacco H. Snoeijer·Martin van Hecke·Ellak Somfai·Wim van Saarloos

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Abstract

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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Jacco H. Snoeijer, Martin van Hecke, Ellak Somfai, Wim van Saarloos. 2002-04-12. Effect of boundaries on the force distributions in granular media. https://doi.org/10.1103/physreve.67.030302

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