An upgraded CFD-DEM investigation on the liquefaction mechanism of sand under cyclic loads

M. J. Jiang, J. Liu, C. Sun

    Research output: Chapter in Book/Conference paperConference paper

    1 Citation (Scopus)

    Abstract

    A CFD-DEM scheme is utilized to investigate the mechanical behavior of saturated sand under cyclic loads. The CFD-DEM scheme is upgraded by taking into account the influence of Magnus force, which acts on spinning particles in fluid. The bond contact model that can consider the slight plastic deformation of particles during collisions is also adopted to effectively dissipate the kenetic energy. A series of cyclic triaxial tests are simulated and results showed that, for the stress-strain relationship, the area of hysteresis loop increases with the increasing confining pressure, indicating that the plastic dissipation energy increases during the cyclic loading. The microscopic mechanical response of sand are analyzed with regard to the velocity field, combine which the analysis of contact force can partly shed light on the liquefaction mechanism.

    Original languageEnglish
    Title of host publicationProceedings of the 7th International Conference on Discrete Element Methods
    EditorsX Li, Y Feng, G Mustoe
    PublisherSpringer Science + Business Media
    Pages609-617
    Number of pages9
    Volume188
    ISBN (Print)9789811019258
    DOIs
    Publication statusPublished - 2017
    Event7th International Conference on Discrete Element Methods, DEM7 2016 - Dalian, China
    Duration: 1 Aug 20164 Aug 2016

    Publication series

    NameSpringer Proceedings in Physics

    Conference

    Conference7th International Conference on Discrete Element Methods, DEM7 2016
    CountryChina
    CityDalian
    Period1/08/164/08/16

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