Stationary shear flows of dense granular materials : a tentative continuum modelling

Abstract

We propose a simple continuum model to interpret the shearing motion of dense, dry and cohesion-less granular media. Compressibility, dilatancy and Coulomb-like friction are the three basic ingredients. The granular stress is split into a rate-dependent part representing the rebound-less impacts between grains and a rate-independent part associated with long-lived contacts. Because we consider stationary flows only, the grain compaction and the grain velocity are the two main variables. The predicted velocity and compaction profiles are in apparent agreement with the experimental or numerical results concerning free-surface shear flows as well as confined shear flows

References in corpus (6)

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• Granular flow down a rough inclined plane: transition between thin and thick piles
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Cited by in corpus (5)

• A constitutive law for dense granular flows
• Rheophysics of dense granular materials : Discrete simulation of plane shear flows
• Rheology of surface granular flows
• Numerical simulation of 2D steady granular flows in rotating drum: On surface flows rheology
• Granular Pressure and the Thickness of a Layer Jamming on a Rough Incline