Shaken sand, stress and test particles
Résumé
The definition of a stress tensor in shaken granular materials is difficult because the local properties change much in space and time. It is shown that in a stationary regime a definition of a standard form can be given at least in the case of a simple geometry (parallelepiped container, infinite along two dimensions, no symmetry breaking). In that case the stress is shown to be uniform. The quantities P+ and P- introduced by Evesque are found to be relevant to describe the force acting on a heavy test particle.
Origine : Accord explicite pour ce dépôt
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