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- W2357502010 abstract "Rock failure results from the process of internal crack initiation,propagation and coalescence intrinsically.A 3D numerical model based on the microscopic damage mechanics is employed to simulate the failure process of numerical rock specimens containing a pre-existing surface flaw subjected to uniaxial compression.The initiation,propagation and coalescence of wing cracks,shell cracks,anti-wing cracks and the secondary crack of shell cracks are reproduced in three-dimensional manner.Numerical results are obtained as follows:(1) anti-wing cracks are induced by the tensile stress after the stress release resulting from the propagation of wing cracks;(2) the shell cracks are predominated by III-type loading,and the wing cracks stop when they propagate ahead for a certain distance;(3) the secondary cracks of the shell cracks lead to the collapse of the whole specimen;(4) III-type fracture could not be obtained by III-type loading in rocks,and the shell cracks are induced by tensile stress in III-type loading;(5) due to the heterogeneities in rocks,it is difficult to find curved wing cracks and anti-wing cracks.The numerical results will be a good supplement of experimental investigation of surface flaw.The numerical code is proved to be a satisfactory tool to investigate the rock fracture in three-dimensional manner." @default.
- W2357502010 created "2016-06-24" @default.
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- W2357502010 date "2011-01-01" @default.
- W2357502010 modified "2023-09-24" @default.
- W2357502010 title "3D numerical simulation of growth of surface crack of rock specimens" @default.
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