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Numerical Study on the Elastic Deformation and the Stress Field of Brittle Rocks under Harmonic Dynamic Load

Author

Listed:
  • Siqi Li

    (Institute of Petroleum Engineering, Northeast Petroleum University, Daqing 163318, China)

  • Shenglei Tian

    (Institute of Petroleum Engineering, Northeast Petroleum University, Daqing 163318, China)

  • Wei Li

    (Institute of Petroleum Engineering, Northeast Petroleum University, Daqing 163318, China)

  • Xin Ling

    (Institute of Petroleum Engineering, Northeast Petroleum University, Daqing 163318, China)

  • Marcin Kapitaniak

    (Centre for Applied Dynamics Research, School of Engineering, University of Aberdeen, Aberdeen AB24 3UE, UK)

  • Vahid Vaziri

    (Centre for Applied Dynamics Research, School of Engineering, University of Aberdeen, Aberdeen AB24 3UE, UK)

Abstract

In order to study the deformation displacement and the stress field of brittle rocks under harmonic dynamic loading, a series of systematic numerical simulations are conducted in this paper. A 3D uniaxial compression simulation is carried out to calibrate and determine the property parameters of sandstone and a model of the cylindrical indenter intruding the rock is proposed to analyze the process of elastic deformation. Four main parameters are taken into account, namely the position on the rock, the frequency and the amplitude of dynamic load, the type of indenter and the loading conditions (static and static-dynamic). Based on the analysis undertaken, it can be concluded that both of the deformation displacement and stress field of the rock change in a harmonic manner under the static-dynamic loads. The frequency and the amplitude of harmonic dynamic load determine the period and the magnitude of the rock response, respectively. In addition, the existence of harmonic dynamic load can aggravate the fatigue damage of the rock and allow a reduction in static load. Our investigations confirm that the static-dynamic loads are more conducive to rock fracture than static load.

Suggested Citation

  • Siqi Li & Shenglei Tian & Wei Li & Xin Ling & Marcin Kapitaniak & Vahid Vaziri, 2020. "Numerical Study on the Elastic Deformation and the Stress Field of Brittle Rocks under Harmonic Dynamic Load," Energies, MDPI, vol. 13(4), pages 1-16, February.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:4:p:851-:d:320997
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    References listed on IDEAS

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    1. Guangjian Dong & Ping Chen, 2018. "3D Numerical Simulation and Experiment Validation of Dynamic Damage Characteristics of Anisotropic Shale for Percussive-Rotary Drilling with a Full-Scale PDC Bit," Energies, MDPI, vol. 11(6), pages 1-23, May.
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    Cited by:

    1. Haiping Zhang & Siqi Li & Zhuo Chen & Yeshuang Tong & Zhuolun Li & Siqi Wang, 2022. "Fracture Mechanism of Crack-Containing Strata under Combined Static and Harmonic Dynamic Loads Based on Extended Finite Elements," Energies, MDPI, vol. 15(21), pages 1-14, October.
    2. 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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