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Photoelastic verification of a mechanical model for the flow of a granular material

Authors
Journal
Journal of the Mechanics and Physics of Solids
0022-5096
Publisher
Elsevier
Publication Date
Volume
20
Issue
5
Identifiers
DOI: 10.1016/0022-5096(72)90029-4

Abstract

Abstract T his paper describes experiments performed on an assembly of discs constituting a two-dimensional analogue of a granular material. The use of photo-elasticity techniques allows the determination of average stress and strain-rate tensors in the interior of the assembly. In this way, a comparison can be made with the behaviour predicted theoretically on the basis of a mechanical model. Test results indicate that the main features of the mechanical model, namely, the sub-division of the assembly into sliding elements, a possible non-coaxiality of stress and strain-rate tensors, and a free rotation of the elements are all indeed observed in practice.

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