共因失效相关同级叶片系统可靠性分析

doi:10.7527/S1000-6893.2019.22803

Abstract

Abstract: Aeroengine has multiple failure modes and complex dependence. To precisely analyze the reliability of aeroengine, structural system reliability model with common cause failure dependence is established based on failure mode dependence. The Monte Carlo method and the approximate numerical analysis method are applied to compute the reliability of aeroengine's same stage blade system with insufficient blade static strength failure, with rub failure induced by blade outer margin deformation, and with both of the above two failures. Results show that the estimated reliability of the traditional reliability model without considering failure dependence is lower than that of the reliability model with common cause failure dependence. While maintaining the similar level of computational accuracy, the approximate numerical analysis method has much higher computational efficiency than the Monte Carlo method.

Key words: common cause failure, same stage blade, dependence, reliability, approximate numerical analysis

CLC Number:

V23
TB114.3

LI Hongwei, CHEN Qinggui, XU Xiaoli, HONG Jie. Reliability analysis of same stage blade system with common failure dependence[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2019, 40(7): 222803-222803.

References

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Reliability analysis of same stage blade system with common failure dependence

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