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《Chinese Journal of Computational Mechanics》 2012-03
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Parallel analysis system for computing damage evolution of rocks subjected to H/TM coupling processes and its primary application

LI Gen*1,2,LI Lian-chong1,TANG Chun-an1,TANG Shi-bin1(1.Institute for Rock Instability and Seismicity Research,School of Civil Engineering,Dalian University of Technology,Dalian 116024,China; 2.Key Laboratory of Geotechnical Mechanics and Engineering of Ministry of Water Resources,Yangtze River Scientific Research Institute,Wuhan 430010,China)  
The 3D parallel analysis system which is used to analyze damage(D) evolution of rocks subjected to the hydraulic(H),temperature(T) and mechanical(M) coupling processes has been developed.Some details about its implementation,linear equations solver,methodologies of parallel communication optimization,and efficient approaches for dealing with different physical fields are discussed.The results of the test models for the HM and TM computing indicate that it is the best performance,nearly linear speedup,and more than 82% efficiency to start a reasonable number of processors in the system,moreover,the one step time-consuming for computing the coupled model of 10 million DOFs with default precision is about 200 s.The numerical simulation results of 3D hydraulic fracturing process and surface cracks of material caused by temperature load have been well reflected the objective laws.The broad application prospects of this system have been shown.
【Fund】: 国家自然科学基金(50909013 50820125405 50804006);; 国家重点基础研究发展计划(973)(2011CB710603)资助项目
【CateGory Index】: TU45
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