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Three-dimensional hybrid finite-discrete element modelling of rock failure process

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Liu, HY ORCID: 0000-0002-5437-4695, Mohammadnejad, M, Han, H and Chan, AHC ORCID: 0000-0003-0042-8448 2018 , 'Three-dimensional hybrid finite-discrete element modelling of rock failure process', paper presented at the 10th Asian Rock Mechanics Symposium - The ISRM International Symposium for 2018, 29 October-3 November 2018, Singapore.

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Abstract

Combined finite-discrete element method has become one of the most powerful numericalmethods for modelling rock failure process in recent decades. However, most of studies focus on two-dimensional combined finite-discrete element modelling of the rock failure process. This paper further develops a hybrid finite-discrete element method proposed early by the authors for three-dimensional modelling of the rock failure processes in Brazilian tests and uniaxial compression test. The further developed three-dimensional hybrid finite-discrete element method is then parallelized using compute unified device architecture – based general purpose graphic processing unit parallel method to conduct a full-scale three-dimensional modelling of rock spalling failure process in the single Hopkinson pressure bar test. It is concluded that the three-dimensional hybrid finite-discrete element method provides a valuable numerical tools for modelling rock fracture and fragmentation and the parallelization makes it possible to be applied in the large-scale rock mass instability engineering application.

Item Type: Conference or Workshop Item (Paper)
Authors/Creators:Liu, HY and Mohammadnejad, M and Han, H and Chan, AHC
Keywords: 3D modelling, hybrid FEM-DEM, Rock fracture, fracture process, rock fragmentation
Journal or Publication Title: Proceedings of 10th Asian Rock Mechanics Symposium
Publisher: ISRM
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