Phys. Rev. E 64, 060302(R) (2001) [4 pages]Rheology of a confined granular material
We study the rheology of a granular material slowly driven in a confined geometry. The motion is characterized by a steady sliding with a resistance force increasing with the driving velocity and the surrounding relative humidity. For lower driving velocities a transition to stick-slip motion occurs, exhibiting a blocking enhancement with decreasing velocity. We propose a model to explain this behavior pointing out the leading role of friction properties between the grains and the container’s boundary. © 2001 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevE.64.060302
DOI:
10.1103/PhysRevE.64.060302
PACS:
45.70.-n, 46.55.+d, 81.05.Rm
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