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    Influence of polydispersity on micromechanics of granular materials

    Access Status
    Fulltext not available
    Authors
    Shaebani, R.
    Madadi, Mahyar
    Luding, S.
    Wolf, D.
    Date
    2012
    Type
    Journal Article
    
    Metadata
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    Citation
    Shaebani, Reza M. and Madadi, Mahyar and Luding, Stefan and Wolf, Dietrich E. 2012. Influence of polydispersity on micromechanics of granular materials. Physical Review E. 85 (1): pp. 011301-1 – 011301-12.
    Source Title
    Physical Review E
    DOI
    10.1103/PhysRevE.85.011301
    ISSN
    1539-3755
    URI
    http://hdl.handle.net/20.500.11937/8927
    Collection
    • Curtin Research Publications
    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.

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