The gear door lock system (GDLS) is a hydraulic and mechatronic system with high degree of complexity and uncertainty, making the performance assessment of the system especially intractable. We develop copula models to estimate the reliability of GDLS with dependent failure modes. Based on the working principle of the GDLS, kinematic and dynamic model with imperfect joints is built in which Latin hypercube sampling (LHS) and kernel smoothing density are utilized to obtain the marginal failure probabilities. Then, copula models are utilized to describe the dependence between the two function failure modes. Furthermore, to be more accurate, mixed copula models are developed. The squared Euclidean distance is adopted to estimate the parameters of the above reliability models. Finally, the Monte Carlo simulation is conducted to evaluate different reliability models.
Reliability Modeling for Gear Door Lock System With Dependent Failures Based on Copula
Manuscript received February 18, 2017; final manuscript received April 2, 2018; published online April 30, 2018. Assoc. Editor: Faisal Khan.
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Shen, L., Zhang, Y., Zhuang, X., and Guo, B. (April 30, 2018). "Reliability Modeling for Gear Door Lock System With Dependent Failures Based on Copula." ASME. ASME J. Risk Uncertainty Part B. December 2018; 4(4): 041003. https://doi.org/10.1115/1.4039941
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