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A micromechanically-based constitutive model for frictional deformation of granular materials. (English) Zbl 0984.74020
From the summary: A micromechanically-based constitutive model is developed for inelastic deformation of frictional granular assemblies. It is assumed that the deformation is produced by relative sliding and rolling of granules, accounting for pressure sensitivity, friction, dilatancy (densification), and, most importantly, the fabric (anisotropy) and its evolution in the course of deformation. Attention is focused on two-dimensional rate-independent cases. The presented theory fully integrates the micromechanics of frictional granular assemblies at the micro- (grains), meso- (large collections of grains associated with sliding planes), and macro- (continuum) scales.
MSC:
74E20Granularity
74M10Friction (solid mechanics)
74M25Micromechanics
74A60Micromechanical theories