Modeling mechanical behavior of very coarse granular materials

Zhen Yu Yin, Pierre Yves Hicher, Christophe Dano, Yin Fu Jin

Research output: Journal article publicationJournal articleAcademic researchpeer-review

87 Citations (Scopus)

Abstract

A novel approach has been developed to predict the mechanical behavior of very coarse granular materials with a constitutive model, which considers both grain breakage and size effect. The behavior of granular assemblies is significantly influenced by particle breakage. A critical-state double-yield-surface model incorporating the change in the critical-state line and in elastic stiffness caused by grain breakage during loading has been adopted. The amount of grain breakage was estimated by extending the size effect theory on individual grains to granular assemblies. The results from earlier studies on granular materials with parallel gradations have been usefully exploited to calibrate and to validate the model. Comparisons between experiments and simulations suggest that this approach can predict the mechanical behavior of very coarse granular materials from test results performed on a finer fraction with a homothetic gradation.

Original languageEnglish
Article numberC4016006
JournalJournal of Engineering Mechanics
Volume143
Issue number1
DOIs
Publication statusPublished - 1 Jan 2017
Externally publishedYes

Keywords

  • Coarse granular material
  • Critical state
  • Elastoplastic model
  • Grain breakage
  • Plastic work
  • Weibull's theory

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering

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