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Parallel Algorithms for Transport Vehicles and Construction Tunnel Dynamic Coupling System
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CAO Lufen1,2,JIN Xianlong1,2,WU Huiming3,DU Xinguang1,2
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(1. State Key Laboratory of Mechanical System and Vibration, Shanghai Jiaotong University, Shanghai 200240； 2. School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai 200240; 3. Shanghai Tunnel Engineering Co., Ltd.，TBM Construction Branch, Shanghai 200023, China)
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Abstract Tail transport vehicles were used to transport concrete lining in the process of construction tunnel in largescale water diversion project of QingCaoSha. A three dimension finite element was built up for the tunnels and transport vehicles, to accurately simulate the impact of transport vehicles on the surrounding tunnel. The threedimensional dynamic contact method was used to simulate the dynamic interaction between structures, such as wheelrail, railtunnel, and tunnelsoil. The explicit nonlinear finite element method was used to numerically simulatle and analyze the dynamic response of the tunnel when each section of the transport vehicles passes through the work shaft. Since the calculation of wheelrail contact was very timeconsuming, considering the highperformance computer structure of Shanghai Dawning 5000A supercomputer, the wheelRail Contact Balance Bisection (WRCBB) Algorithm, based on Recursive Coordinate Bisection (RCB) Algorithm, was designed. The accelerating effects of two kinds of parallel algorithms were analyzed and compared. The result indicates that, compared with the RCB method, the WRCBB method has improved the acceleration ratio and parallel efficiency in solving contact problem of largescale structural dynamic analysis.
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Received: 07 April 2010
Published: 30 November 2010
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