Optimal Copula Analysis of Mechanical Components Re-liability with Correlated Failure Modes

Song ZHOU

School of Electro-mechanical & Automobile Engineering, Chongqing Jiaotong University, Chongqing, 400074, China

Abstract: To consider a failure mode correlation of mechanical components. Using copulas connect function describing the correlation of advantage. Choose the optimal copulas connect function is presented to realize the reliability of mechanical components modeling method.This method is a kind of independent of copulas connect model parameter selection method, namely the bayesian model selection method. Thus concluded that can be used to ｓｅｌｅｃｔ the optimal copulas connect function to realize the reliability analysis of mechanical parts. By an example in comparison with other methods, the results show that the model can well solve the problem of mechanical parts reliability prediction.

Keywords: Mechanical parts;Correlated failure mode;Reliability;Copula function; Bayesian model selection