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Volume 42 Issue 4
Apr.  2016
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Journal of Beijing University of Aeronautics and Astronautics  > 2016  >  42(4): 815-820.
LIU Zhe, TAO Fenghe, JIA Changzhiet al. Reliability robust design of tracked vehicle torque axis with multiple failure modes[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(4): 815-820. doi: 10.13700/j.bh.1001-5965.2015.0253(in Chinese)
Citation: LIU Zhe, TAO Fenghe, JIA Changzhiet al. Reliability robust design of tracked vehicle torque axis with multiple failure modes[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(4): 815-820. doi: 10.13700/j.bh.1001-5965.2015.0253(in Chinese)
shu

Reliability robust design of tracked vehicle torque axis with multiple failure modes

doi: 10.13700/j.bh.1001-5965.2015.0253

  • Artillery Engineering Department, Ordnance Engineering College, Shijiazhuang 050003, China

Funds:  National Natural Science Foundation of China (51175508);Natural Science Foundation of Hebei Province (E2012506009)
  • Received Date: 24 Apr 2015
  • Rev Recd Date: 17 Jul 2015
  • Publish Date: 20 Apr 2016
    Abstract
  • Several potential failure modes may occur when tracked vehicle torque axis fail, and therefore it is necessary to take each failure mode into account as reliability sensitivity estimation is performed. A reliability sensitivity analysis method for mechanical components with multiple failure modes is proposed. Concerning the unknown distributions of random variables, the random perturbation technique and the fourth moments method are employed to respectively calculate the first four moments and the reliability index of each performance function of the failure mode. According to the characteristic that the overall fails when a failure mode occurs in mechanical parts, the mechanical parts reliability calculation method with correlation between different failure modes is determined. The calculating formulas of reliability sensitivity with respect to the mean and variance of random variables are derived with the gradient method. According to the result of reliability sensitivity analysis, we put forward the model multi-objective optimization design of mechanical parts with multiple failure modes. The numerical example illustrates that the proposed method could quickly and effectively estimate the reliability sensitivity of the mechanical components with multiple failure modes, and could optimize the mechanical robust design.

     

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