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《Chinese Journal of Geotechnical Engineering》 2011-09
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Three-Dimensional parallel computing on failure process of rock specimen with a pre-existing circular opening

XIE Lin-mao,ZHU Wan-cheng,WANG Shu-hong,NIU Lei-lei(Center for Rock Instability and Seismicity Research,Northeastern University,Shenyang 110819,China)  
The initiation,propagation and coalescence of cracks during rock failure are always in three-dimensional distribution,so the three-dimensional simulation would be more helpful in capturing the three-dimensional failure process of rock.In this paper,firstly,under the parallel computing environment in Northeastern University of China,a numerical code capable for simulating three-dimensional failure process of rock,RFPA3D-Parallel code,is used to simulate the failure process of rock specimen with a pre-existing circular opening under uniaxial,biaxial and triaxial loading conditions.The numerical simulations indicate that:(1) the cracking patterns around the opening under uniaxial compression are well predicted,validating the capability of RFPA3D-Parallel in simulating the cracking zone around the opening;(2) under the biaxial compression the failure surface parallel to the loading plane is observed;(3) the complex failure patterns under the combination of triaxial loading conditions are numerically simulated,and the zonal disintegration around the opening can be captured when the rock specimen is highly compressed in the direction of the axis of hole and is confined in other two directions.
【Fund】: 国家自然科学基金项目(50874024 50934006);; 国家重点基础研究发展计划(973计划)项目(2007CB209405);; 中央高校基本科研业务费项目(N090501001);; 霍英东教育基金项目(122023);; 中韩NSFC-KOSEF国际合作项目(50911140284)
【CateGory Index】: TU458
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