Friction in Granular Flows
- 1 April 1990
- journal article
- Published by IOP Publishing in Europhysics Letters
- Vol. 11 (7), 619-624
- https://doi.org/10.1209/0295-5075/11/7/007
Abstract
From simple microscopic considerations we propose an expression for the frictional force in granular materials. This force has very nonlinear behavior as a function of the shear rate. The mechanism we propose predicts the existence of a characteristic shear rate, 0, which separates regions of stable from unstable flow. Our formulation can explain the hysteresis phenomena commonly observed in granular materials.Keywords
This publication has 10 references indexed in Scilit:
- Pattern formation in flowing sandPhysical Review Letters, 1989
- Properties of earthquakes generated by fault dynamicsPhysical Review Letters, 1989
- Instability in a Sand HeapPhysical Review Letters, 1989
- Relaxation at the Angle of ReposePhysical Review Letters, 1989
- Observations of rapidly flowing granular-fluid materialsJournal of Fluid Mechanics, 1985
- Stresses developed by dry cohesionless granular materials sheared in an annular shear cellJournal of Fluid Mechanics, 1984
- A theory for the rapid flow of identical, smooth, nearly elastic, spherical particlesJournal of Fluid Mechanics, 1983
- Gravity flow of cohesionless granular materials in chutes and channelsJournal of Fluid Mechanics, 1979
- The shearing and dilatation of dry sand and the 'singing’ mechanismProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1966
- Experiments on a gravity-free dispersion of large solid spheres in a Newtonian fluid under shearProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1954