A Comparison of Discrete Element and Micromechanical Methods for Determining the Effective Elastic Properties of Geomaterials

S Geer, J. R. Berger, William Parnell, G.G.W Mustoe

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    Abstract

    Data generated from scanning electron microscopy images of oil-shale geomaterials are used to generate configurations and to acquire parameters required for use in homogenization schemes for the determination of the effective elastic properties of the samples. Two alternative homogenization methods are employed: numerical simulation using the Discrete Element Method and the Polycrystalline Self-Consistent Method from micromechanics. The schemes give rise to predictions of the effective elastic properties that are in very good agreement.
    Original languageEnglish
    Pages (from-to)1-9
    Number of pages9
    JournalComputers and Geotechnics
    Volume87
    Early online date15 May 2017
    DOIs
    Publication statusPublished - Jul 2017

    Keywords

    • Homogenization
    • Discrete element method
    • micromechanics
    • Geomaterials
    • Polycrystalline self-consistent method
    • Anisotropy
    • Stiffness tensor
    • Hill tensor
    • Concentration tensor

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