The structure of shear bands in idealized granular materials

Journal Article · Sun Mar 01 04:00:00 EST 1992 · Applied Mechanics Reviews

DOI:https://doi.org/10.1115/1.3121381· OSTI ID:259038

Bardet, J P; Proubet, J ^[1]

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1. Univ. of Southern California, Los Angeles, CA (United States)

The structure of shear bands in granular materials was investigated by numerically simulating an idealized assembly of two-dimensional particles. Flexible stress-controlled boundaries were used instead of periodic boundaries to avoid constraining the motion of particles within the tested specimen. The particle displacement, particle rotations and rotations of the particle neighborhoods (macro-rotation) were examined within the shear band. The shear band width was found to decrease with axial strain from 18 and 15 times the average particle radius. The particle rotations and macro-rotations were concentrated inside the shear bands. The numerical simulations suggest that the particle rotations are induced by macro-rotations, and support the use of the micropolar theory for examining instable phenomena within granular materials. 18 refs., 6 figs.

• Sponsoring Organization: USDOE
• OSTI ID: 259038
• Report Number(s): CONF-911070--; CNN: Grant MSM 8657999
• Journal Information: Applied Mechanics Reviews, Journal Name: Applied Mechanics Reviews Journal Issue: 3 Vol. 45; ISSN AMREAD; ISSN 0003-6900
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
99 GENERAL AND MISCELLANEOUS
GRAIN SIZE
GRANULAR MATERIALS
MATHEMATICAL MODELS
SHEAR
SOILS