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Shearing behavior of polydisperse media

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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 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. To model additives used to control viscosity we introduce so-called “point-like particles”. Even changing the kinematic behavior very little, the point-like particles reduce the force necessary to maintain a fixed shearing velocity.

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Authors and Affiliations

  1. Institute for Computational Physics, University of Stuttgart, Pfaffenwaldring 27, 70569, Stuttgart, Germany

    M. Wackenhut, S. McNamara & H. Herrmann

Authors
  1. M. Wackenhut
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  2. S. McNamara
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  3. H. Herrmann
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Correspondence to M. Wackenhut.

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Wackenhut, M., McNamara, S. & Herrmann, H. Shearing behavior of polydisperse media. Eur. Phys. J. E 17, 237–246 (2005). https://doi.org/10.1140/epje/i2004-10144-7

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  • DOI: https://doi.org/10.1140/epje/i2004-10144-7

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