Loading conditions in the brazilian test simulation by DEM

S. Nakashima, K. Taguchi, A. Moritoshi, N. Shimizu, Takahiro Funatsu

    研究成果: Chapter in Book/Report/Conference proceedingConference contribution

    7 被引用数 (Scopus)

    抄録

    The Particle Flow Code (PFC), a simulation code based on the distinct element method (DEM), is an effective numerical tool for simulating the failure process of hard rock. By introducing contact- and parallel-bond and clump logic, the code has become better able to express the ratio of uniaxial compressive strength to tensile strength of hard rock. On the other hand, a problem has arisen, namely, that PFC simulations with the clumped particle model cannot reproduce rapid strain-softening behavior in Brazilian tensile tests. In addition, cracks propagate too widely in the specimens; this differs from the experimental facts. Attributing the above problems to the loading configuration, some two-dimensional PFC simulations of Brazilian tests were conducted in this study under several loading conditions. Strip loading (line loading in two dimensions) and line loading (point loading in two dimensions) were taken into consideration. From the simulation results, point loading was found to be effective for expressing rapid strain-softening behavior and crack propagation in Brazilian tensile tests.

    本文言語英語
    ホスト出版物のタイトル47th US Rock Mechanics / Geomechanics Symposium 2013
    ページ1833-1838
    ページ数6
    出版ステータス出版済み - 12 1 2013
    イベント47th US Rock Mechanics / Geomechanics Symposium 2013 - San Francisco, CA, 米国
    継続期間: 6 23 20136 26 2013

    出版物シリーズ

    名前47th US Rock Mechanics / Geomechanics Symposium 2013
    3

    その他

    その他47th US Rock Mechanics / Geomechanics Symposium 2013
    Country米国
    CitySan Francisco, CA
    Period6/23/136/26/13

    All Science Journal Classification (ASJC) codes

    • Geotechnical Engineering and Engineering Geology

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