Micropolar effects on instability within idealized granular materials

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

1 Citation (Scopus)

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. Preliminary experiments aiming at defining an improved relationship between the couple and rotation at particle contact indicate that the contact resistance to rotation increases linearly with normal contact forces.

Original languageEnglish (US)
Title of host publicationAmerican Society of Mechanical Engineers, Applied Mechanics Division, AMD
PublisherPubl by ASME
Pages1-14
Number of pages14
Volume135
StatePublished - 1992
Externally publishedYes
EventASME Summer Mechanics and Materials Conferences - Tempe, AZ, USA
Duration: Apr 28 1992May 1 1992

Other

OtherASME Summer Mechanics and Materials Conferences
CityTempe, AZ, USA
Period4/28/925/1/92

Fingerprint

Granular materials
Friction
Shear bands
Contact resistance
Shear strength
Failure modes
Computer simulation
Experiments

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

Bardet, J-P., & Huang, Q. (1992). Micropolar effects on instability within idealized granular materials. In American Society of Mechanical Engineers, Applied Mechanics Division, AMD (Vol. 135, pp. 1-14). Publ by ASME.

Micropolar effects on instability within idealized granular materials. / Bardet, Jean-Pierre; Huang, Q.

American Society of Mechanical Engineers, Applied Mechanics Division, AMD. Vol. 135 Publ by ASME, 1992. p. 1-14.

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

Bardet, J-P & Huang, Q 1992, Micropolar effects on instability within idealized granular materials. in American Society of Mechanical Engineers, Applied Mechanics Division, AMD. vol. 135, Publ by ASME, pp. 1-14, ASME Summer Mechanics and Materials Conferences, Tempe, AZ, USA, 4/28/92.
Bardet J-P, Huang Q. Micropolar effects on instability within idealized granular materials. In American Society of Mechanical Engineers, Applied Mechanics Division, AMD. Vol. 135. Publ by ASME. 1992. p. 1-14
Bardet, Jean-Pierre ; Huang, Q. / Micropolar effects on instability within idealized granular materials. American Society of Mechanical Engineers, Applied Mechanics Division, AMD. Vol. 135 Publ by ASME, 1992. pp. 1-14
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