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Numerical Simulation Analysis and Structure Optimization of W-beam Semi-rigid Guardrail When Crashed with Vehicles

XIE Qingxi,ZHANG Weigang,Zhong Zhihua(Hunan University,Changsha410082,China)  
A coupling dynamics FEM model of guardrail and vehicle crashing system is built in this paper in accordance with the W-beam semi-rigid guardrail used widely in express way.By this way,the authors study the snagging effect of the rail post to vehicles,and put forword an effective method to solve the snagging effect.
【Key Words】: semi-rigid guardrail vehicle crashing simulation analysis finite element method
【CateGory Index】: U417.12
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