Shear zones in granular media: 3D Contact Dynamics simulation

Details Shear zones in granular media: 3D Contact Dynamics simulation Shear zones in granular media: 3D Contact Dynamics simulation

2007-04-18

arxiv.org/abs/0704.2392v2

Phys. Rev. E 76, 051301 (2007)

Physics

Condensed Matter

Soft Condensed Matter

9 pages

Scientific paper

10.1103/PhysRevE.76.051301

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.

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