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Soft Matter and Biological Physics

Eur. Phys. J. E 3, 309-314

Compaction of a granular material under cyclic shear

M. Nicolas - P. Duru - O. Pouliquen

Groupe Ecoulements de Particules, IUSTI Technopôle de Château-Gombert, 5 rue Fermi, 13453 Marseille cedex 13, France

Received 31 March 2000

In this paper we present experimental results concerning the compaction of a granular assembly of spheres under periodic shear deformation. The dynamics of the system is slow and continuous when the amplitude of the shear is constant, but exhibits rapid evolution of the volume fraction when a sudden change in shear amplitude is imposed. This rapid response is shown to be uncorrelated with the slow compaction process.

45.70.Cc Static sandpiles; granular compaction - 61.50.-f Crystalline state

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