Reorganization of a dense granular assembly: The unjamming response function

Évelyne Kolb, Jean Cviklinski, José Lanuza, Philippe Claudin, and Éric Clément
Phys. Rev. E 69, 031306 – Published 30 March 2004
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Abstract

We investigate the mechanical properties of a static dense granular assembly in response to a local forcing. To this end, a small cyclic displacement is applied on a grain in the bulk of a two-dimensional disordered packing under gravity and the displacement fields are monitored. We evidence a dominant long range radial response in the upper half part above the solicitation and after a large number of cycles the response is “quasireversible” with a remanent dissipation field exhibiting long range streams and vortexlike symmetry.

  • Received 4 August 2003

DOI:https://doi.org/10.1103/PhysRevE.69.031306

©2004 American Physical Society

Authors & Affiliations

Évelyne Kolb*, Jean Cviklinski*, José Lanuza*, Philippe Claudin*, and Éric Clément*

  • Laboratoire des Milieux Désordonnés et Hétérogènes, UMR 7603, Université Pierre et Marie Curie, Boîte 86, 4 Place Jussieu, 75252 Paris Cedex 05, France

  • *Present address: Laboratoire de Physique et Mécanique des Milieux Hétérogènes, ESPCI, 10 rue Vauquelin, 75231 Paris Cedex 05, France.

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Vol. 69, Iss. 3 — March 2004

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