ccording to that when degradation process is linear degradation, the system is attacked by external δ shock, by considering that system failure results from external impact and natural degradation and that the natural degradation of the two is correlated, the reliability assessment of the system is proposed.The correlation is considered in two perspectives, on the one hand, the damage caused by the shock makes internal degradation increase while the magnitude of internal degradation determines the change of failure threshold value from the shock, the two affect each other.On the other hand, there is correlation between degradations.The system degradation is divided into eight parts and their incompatibility is studied, the correlation is described by Copula related theories, and the reliability function of the system is obtained.Finally, through case analysis, the validity and operability of the model are shown.
刘汉葱, 刘赪,张诚, 陶小寒.随机δ冲击下多相关退化的竞争失效可靠性评估[J].重庆工商大学学报（自然科学版）,2019,36(5):44-51
LIU Han-cong, LIU Cheng, ZHANG Cheng, TAO Xiao-han. Reliability Assessment of Competitive Failure for Multi-correlated Degradation under δ Random Shock[J]. Journal of Chongqing Technology and Business University(Natural Science Edition）,2019,36(5):44-51