Numerical simulations of the incremental responses of idealized granular materials

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Abstract

Herein we investigate the incremental structure of several constitutive theories-elasticity, single and multiple mechanisms elastoplasticity, and vertex plasticity-in the case of idealized granular materials. Based on numerical simulations, we determine the incremental strains that result from a series of stress increments with an identical amplitude but different directions. Idealized granular materials are found to exhibit an incrementally piecewise-linear behavior that is described by elastoplasticity with a single mechanisms, and a nonassociative flow rule. The numerical simulations revealed no evidence for the incremental nonlinearities of multiple mechanisms plasticity or vertex plasticity.

Original languageEnglish (US)
Pages (from-to)879-908
Number of pages30
JournalInternational Journal of Plasticity
Volume10
Issue number8
DOIs
StatePublished - 1994
Externally publishedYes

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ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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