Steady state rheology from homogeneous and locally averaged simple shear simulations

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    Abstract

    Granular materials and particulate matter are ubiquitous in our daily life and they display interesting bulk behaviors from static to dynamic, solid to fluid or gas like states, or even all these states together. To understand how the micro structure and inter-particle forces influence the macroscopic bulk behavior is still a great challenge today. This short paper presents stress controlled homogeneous simple shear results in a 3D cuboidal box using MercuryDPM software. An improved rheological model is proposed for macroscopic friction, volume fraction and coordination number as a function of inertial number and pressure. In addition, the results are compared with the locally averaged data from steady state shear bands in a split bottom ring shear cell and very good agreement is observed in low to intermediate inertia regime at various confining pressure but not for high inertia collisional granular flow.
    Original languageEnglish
    Article number03070
    Pages (from-to)1-4
    Number of pages4
    JournalEPJ Web of Conferences
    Volume140
    DOIs
    Publication statusPublished - 30 Jun 2017
    Event8th International Conference on Micromechanics on Granular Media, Powders & Grains 2017 - Montpellier, France
    Duration: 3 Jul 20177 Jul 2017
    Conference number: 8
    http://pg2017.org/en/

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    Keywords

    • Steady state
    • Rheology
    • Simple shear
    • split bottom ring-shear cell
    • Granular media

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