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Anomalous Stress Profile in a Sheared Granular Column

Mehandia, Vishwajeet and Gutam, KamalaJyotsna and Nott, PrabhuR (2012) Anomalous Stress Profile in a Sheared Granular Column. In: PHYSICAL REVIEW LETTERS, 109 (12).

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Official URL: http://dx.doi.org/10.1103/PhysRevLett.109.128002

Abstract

We present measurements of the stress as a function of vertical position in a column of granular material sheared in a cylindrical Couette device. All three components of the stress tensor on the outer cylinder were measured as a function of distance from the free surface at shear rates low enough that the material was in the dense, slow flow regime. We find that the stress profile differs fundamentally from that of fluids, from the predictions of plasticity theories, and from intuitive expectation. We argue that the anomalous stress profile is due to an anisotropic fabric caused by the combined action of gravity and shear.

Item Type: Journal Article
Additional Information: Copyright for this article belongs to AMER PHYSICAL SOC, ONE PHYSICS ELLIPSE, USA
Department/Centre: Division of Mechanical Sciences > Chemical Engineering
Date Deposited: 22 Nov 2012 10:27
Last Modified: 22 Nov 2012 10:27
URI: http://eprints.iisc.ernet.in/id/eprint/45318

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