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3D XCT Mesostructure Characterization and Image-Based Discrete Element (DE) Modelling of Failure Patterns in Coal Gangue Particles (CGPs)

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  • K. H. Zheng
  • B. J. Qiu
  • J. P. Li
  • K. D. Gao

Abstract

The paper presents an application of milli- and micro-XCT to mesostructure characterization of CGPs and failure patterns analysis using dynamic impact simulations. In this study, XCT scanning experiments are firstly conducted on CGPs, followed by a series of image analyses with qualitative results. Then, the 3D mesomorphological parameters and internal composition of individual particles are quantitatively characterized. Finally, dynamic impact loading in y -axis direction is modelled to investigate the 3D mesostructure and different impact velocity effects on failure patterns of individual particles. The studies show that the mesomorphological parameters present different distribution characteristics in individual CGPs. The approximate location of gangue phase is the key parameter that should be taken into account to study failure patterns as well as fracture mechanism of the heterogeneous rock materials. The XCT image-based numerical model proved to be an effective tool that gives insights into the mesodeformation mechanisms of heterogeneous coal rock (HCR) undergoing dynamic impact failure behavior.

Suggested Citation

  • K. H. Zheng & B. J. Qiu & J. P. Li & K. D. Gao, 2019. "3D XCT Mesostructure Characterization and Image-Based Discrete Element (DE) Modelling of Failure Patterns in Coal Gangue Particles (CGPs)," Complexity, Hindawi, vol. 2019, pages 1-13, November.
    • Handle: RePEc:hin:complx:4021368
    DOI: 10.1155/2019/4021368
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    References listed on IDEAS

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    1. Wenyuan Ren & Zhenjun Yang & Rajneesh Sharma & Samuel A. McDonald & Paul M. Mummery, 2018. "Three-Dimensional In Situ XCT Characterisation and FE Modelling of Cracking in Concrete," Complexity, Hindawi, vol. 2018, pages 1-11, July.
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    Cited by:

    1. Kuidong Gao & Xiaodi Zhang & Liqing Sun & Qingliang Zeng & Zhihai Liu, 2021. "Loading Performance of a Novel Shearer Drum Applied to Thin Coal Seams," Energies, MDPI, vol. 14(2), pages 1-21, January.

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