Abstract
The paper described two different numerical 3D mesoscopic approaches (the meso-scale image-based FE and DE model) for quantitative and qualitative characterization of the dynamic impact mechanical behavior of HCR. The 3D meso-structure of HCR in calculations, which was directly obtained from real coal rock specimen using non-destructive XCT techniques, was modelled as a random heterogeneous two-phase material composed of coal and gangue respectively. Dynamic impact loading in three directions (x-, y-, and z-axis) were modelled to investigate the 3D meso-structure and different input energies effects on failure patterns of HCR. The very different qualitative and quantitative results demonstrated that the spatial distribution of mineral phases, loading directions and input energies have pronounced influenced on material strength as well as failure patterns of heterogeneous rock materials. The XCT image-based numerical model proved to be an effective tool that gives insights into the meso-deformation mechanisms of HCR undergoing dynamic impact failure behavior.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.