Shear zones in granular media: 3D Contact Dynamics simulation
arXiv:0704.2392 · doi:10.1103/PhysRevE.76.051301
Abstract
Shear zone formation is investigated in slow 3D shear flows. We simulate the linear version of the split-bottom shear cell. It is shown that the same type of wide shear zones is achieved in the presence as well as in the absence of gravity. We investigate the relaxation of the material towards a stationary flow and analyze the stress and the velocity fields. We provide the functional form of the widening of the shear zone inside the bulk. We discuss the growth of the region where the material is in critical state. It is found that the growth of the critical zone is responsible for the initial transient of the shear zone.
9 pages
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- MR Imaging of Reynolds Dilatancy in the Bulk of Smooth Granular Flows
- From Frictional to Viscous Behavior: Three Dimensional Imaging and Rheology of Gravitational Suspensions
- Fluid depletion in shear bands
- Relevance of visco-plastic theory in a multi-directional inhomogeneous granular flow
- Heaping, Secondary Flows and Broken Symmetry in Flows of Elongated Granular Particles
- Evolution of shear zones in granular materials
- An energy-preserving Discrete Element Method for elastodynamics
- Reflection and Exclusion of Shear Zones in Inhomogeneous Granular Materials
- Gravity Governs Shear Localization in Confined Dense Granular Flows
- Finite width of quasi-static shear bands
- A variational discrete element method for the computation of Cosserat elasticity