Influence of polydispersity on micromechanics of granular materials

M. Reza Shaebani, Mahyar Madadi, Stefan Luding, Dietrich E. Wolf

Research output: Contribution to journalArticleAcademicpeer-review

54 Citations (Scopus)
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Abstract

We study the effect of polydispersity on the macroscopic physical properties of granular packings in two and three dimensions. A mean-field approach is developed to approximate the macroscale quantities as functions of the microscopic ones. We show that the trace of the fabric and stress tensors are proportional to the mean packing properties (e.g., packing fraction, average coordination number, and average normal force) and dimensionless correction factors, which depend only on the moments of the particle-size distribution. Similar results are obtained for the elements of the stiffness tensor of isotropic packings in the linear affine response regime. Our theoretical predictions are in good agreement with the simulation results.
Original languageEnglish
Article number011301
Number of pages12
JournalPhysical review E: Statistical, nonlinear, and soft matter physics
Volume85
Issue number1
DOIs
Publication statusPublished - 3 Jan 2012

Keywords

  • METIS-294105
  • IR-80402

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