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Shearing behavior of polydisperse media

Martin Wackenhut·Sean McNamara·Hans Herrmann
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Abstract

We study the shearing of polydisperse and bidisperse media with a size ratio of 10. Simulations are performed with a the two dimensional shear cell using contact dynamics. With a truncated power law for the polydisperse media we find that they show a stronger dilatancy and greater resistance to shearing than bidisperse mixtures. Motivated by the practical problem of reducing the energy needed to shear granular media, we introduce "point-like particles" representing charged particles in the distribution. Even though changing the kinematic behavior very little, they reduce the force necessary to maintain a fixed shearing velocity.

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Martin Wackenhut, Sean McNamara, Hans Herrmann. 2004-07-29. Shearing behavior of polydisperse media. https://doi.org/10.1140/epje%2Fi2004-10144-7

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