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Hybrid Finite-Discrete Element Modelling of Various Rock Fracture Modes during Three Conventional Bending Tests

Author

Listed:
  • Huaming An

    (Faculty of Public Security and Emergency Management, Kunming University of Science and Technology, Kunming 650093, China)

  • Shunchuan Wu

    (Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, China)

  • Hongyuan Liu

    (College of Science and Engineering, University of Tasmania, Hobart, TAS 7001, Australia)

  • Xuguang Wang

    (School of Civil and Resources Engineering, University of Science and Technology Beijing, Beijing 100083, China)

Abstract

The numerical techniques for modelling the rock fracture have been briefly reviewed. A hybrid finite-discrete element method (HFDEM) is proposed to simulate various fracture types of rock. A fracture model is implemented in the HFDEM for simulation of the three main fracture types. In addition, the influence of the strain rate is considered during the HFDEM modelling rock behavior. Then, two typical rock mechanism tests are employed to calibrate the HFDEM. The proposed method has well modelled the rock fracture processes and can obtain reasonable stress distribution and force–displacement curves. After that, the HFDEM is used to model three convention bending tests. The obtained rock fracture processes indicates that the HFDEM can simulate various fracture types. The obtained rock strengths and fracture toughness indicate that the HFDEM can reflect the influence of the strain rate. It is concluded that the HFDEM can model the entire and complete rock fracture process during the three convention bending tests, and it also can capture the rock’s behavior on the strain rate.

Suggested Citation

  • Huaming An & Shunchuan Wu & Hongyuan Liu & Xuguang Wang, 2022. "Hybrid Finite-Discrete Element Modelling of Various Rock Fracture Modes during Three Conventional Bending Tests," Sustainability, MDPI, vol. 14(2), pages 1-26, January.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:2:p:592-:d:718742
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    Citations

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    Cited by:

    1. Guoqing Cai & Jian Li & Shaopeng Liu & Jiguang Li & Bowen Han & Xuzhen He & Chenggang Zhao, 2022. "Simulation of Triaxial Tests for Unsaturated Soils under a Tension–Shear State by the Discrete Element Method," Sustainability, MDPI, vol. 14(15), pages 1-17, July.
    2. Huaming An & Yuqing Fan & Hongyuan Liu & Yinyao Cheng & Yushan Song, 2022. "The State of the Art and New Insight into Combined Finite–Discrete Element Modelling of the Entire Rock Slope Failure Process," Sustainability, MDPI, vol. 14(9), pages 1-20, April.
    3. Yushan Song & Yuqing Fan & Huaming An & Hongyuan Liu & Shunchuan Wu, 2022. "Investigation of the Dynamic Pure-Mode-II Fracture Initiation and Propagation of Rock during Four-Point Bending Test Using Hybrid Finite–Discrete Element Method," Sustainability, MDPI, vol. 14(16), pages 1-23, August.

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