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Article Navigation >  Journal of Traffic and Transportation Engineering  > 2007  >  7(6): 17-20
MOU Bing-rong, ZHANG Wei-hua, XIAO Shou-ne, JIN Ding-chang. Dynamic stress calculation method of locomotive and vehicle carbody structures[J]. Journal of Traffic and Transportation Engineering, 2007, 7(6): 17-20.
Citation: MOU Bing-rong, ZHANG Wei-hua, XIAO Shou-ne, JIN Ding-chang. Dynamic stress calculation method of locomotive and vehicle carbody structures[J]. Journal of Traffic and Transportation Engineering, 2007, 7(6): 17-20.
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Dynamic stress calculation method of locomotive and vehicle carbody structures

  • Traction Power State Key Laboratory, Southwest Jiaotong University, Chengdu 610031, Sichuan, China

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  • Author Bio:

    Miao Bing-rong(1970-), male, EngD, + 86-28-87634788, brmiao@163.com

  • Received Date: 2007-09-26
  • Publish Date: 2007-12-25
    Abstract
  • In order to improve the fatigue lives of locomotive and vehicle and optimize their carbody structures, a synthetical computation method of dynamic stress was proposed based on multi-body system (MBS) simulation model and finite element method, and the dynamic stresses of locomotive and vehicle carbody structures were calculated.Taking carbody as core, MBS simulation model of locomotive was established, and its simulation analysis was performed to obtain the load time histories of crucial positions.Finite element method (FEM) and quasi-static stress analysis method were used to calculate stress influence coefficients (SIC).Carbody dynamic stress history was produced by multiplying each stochastic load-time history by the SIC resulted from corresponding unit load, and the dynamic stress test result of carbody structure was compared with the simulation result of rigid and flexible carbodies.Comparison result shows that their errors are 2.462% and 7.258% respectively, which indicates that the computational precision of the method is high.

     

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