Micromechanical investigation of the influence of couple stresses on failure in granular materials

J. P. Bardet, Q. Huang, J. Proubet

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

By using the results of numerical simulations, it is shown that the couples acting at particle contacts significantly influence the shear strength and the localized failure modes of idealized granular materials. In the absence of contact couples, the overall friction angle is smaller than the interparticle friction angle; this low friction angle results from the concentration of particle rotations within shear bands. In the presence of large reaction couples at particle contacts, the overall friction angle becomes much larger than the interparticle friction angle and the deformation localizes in failure patterns different from those observed experimentally in granular media.

Original languageEnglish (US)
Title of host publicationRock Mechanics Proceedings of the 33rd U.S. Symposium
PublisherPubl by A.A. Balkema
Number of pages1
ISBN (Print)9054100451
StatePublished - Dec 1 1991
Externally publishedYes
EventProceedings of the 1992 MRS Fall Meeting: Symposium U, Solid State Ionics - Santa Fe, NM, USA
Duration: Jun 3 1992Jun 5 1992

Publication series

NameU.S. Symposium on Rock Mechanics

Other

OtherProceedings of the 1992 MRS Fall Meeting: Symposium U, Solid State Ionics
CitySanta Fe, NM, USA
Period6/3/926/5/92

ASJC Scopus subject areas

  • Engineering(all)

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