A constitutive model for granular materials considering grain breakage

W. Hu, Zhenyu Yin, C. Dano, P.-Y. Hicher

Research output: Journal article publicationJournal articleAcademic researchpeer-review

79 Citations (Scopus)

Abstract

A particle breakage has a significant impact on the mechanical behavior of granular materials. In this paper, we present an elasto-plastic model with two yield surfaces to which the influence of particle breakage has been introduced. The main feature of this model is to incorporate the change in the critical state line (CSL) consequent to the grain breakage induced by isotropic and deviatoric stresses during loading. For this purpose we propose a breakage function which connects the evolution of the CSL to the energy consumed. Results from earlier studies on drained and undrained compression and extension triaxial tests were used to calibrate and validate the model. Comparison between earlier results and our simulations indicates that the model can reproduce with good accuracy the mechanical behavior of crushable granular materials and predict the evolution of the grain size distribution during loading. © 2011 Science China Press and Springer-Verlag Berlin Heidelberg.
Original languageEnglish
Pages (from-to)2188-2196
Number of pages9
JournalScience China Technological Sciences
Volume54
Issue number8
DOIs
Publication statusPublished - 1 Aug 2011
Externally publishedYes

Keywords

  • critical state
  • elasto-plasticity
  • grain breakage
  • grain size distribution
  • granular materials

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)

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