A two-stage degradation model and reliability analysis related to degradation of binary load-sharing systems

被引：0
|
作者：
Zhang, Fan [1 ,2 ]
Cheng, Bohan [3 ]
Wang, Peng [1 ,2 ]
Dong, Lei [1 ,2 ]
机构：
[1] Key Laboratory of Civil Aircraft Airworthiness Technology, Civil Aviation University of China, Tianjin
[2] Science and Technology Innovation Research Institute, Civil Aviation University of China, Tianjin
[3] College of Safety Science and Engineering, Civil Aviation University of China, Tianjin
来源：
Hangkong Xuebao/Acta Aeronautica et Astronautica Sinica | 2024年 / 45卷 / 07期
基金：
中国国家自然科学基金;
关键词：
degradation correlation; load sharing; Monte Carlo; reliability analysis; remaining life;
D O I：
10.7527/S1000-6893.2023.29046
中图分类号：
学科分类号：
摘要：
A two-stage degradation model considering degradation rate interactions is proposed for the degradation of binary load-sharing components in highly complex airborne systems affected by degradation process interactions and load sharing. Firstly，a two-component degradation dependence characterization method based on degradation rate interaction is investigated to establish a two-component degradation correlation model without considering the influence of load sharing. Secondly，considering the influence of load sharing on degradation rate，the system degradation process is divided into two stages with a component failure as a variable point，and a two-component degradation correlation model with the influence of load sharing is constructed. The model parameters are estimated using the great likelihood estimation method，and the reliability model and the remaining life model of the system are constructed. Finally，taking an aviation component as an example，the reliability calculation of the load-sharing system related to binary degradation is carried out，and the proposed method provides support for the reliability analysis of the degradation and failure of binary load-sharing components of complex systems. © 2024 Chinese Society of Astronautics. All rights reserved.
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