A novel solution for comprehensive competing failure process considering two-phase degradation and non-Poisson shock
A novel solution for comprehensive competing failure process considering two-phase degradation and non-Poisson shock
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DOI：
10.1016/j.ress.2023.109534
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发表时间：
2023-08
期刊：
影响因子：
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通讯作者：
S. Cao;Zhihua Wang;Chengrui Liu;Qiong Wu;Junxing Li;Xiangmin Ouyang
中科院分区：
文献类型：
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作者：
S. Cao;Zhihua Wang;Chengrui Liu;Qiong Wu;Junxing Li;Xiangmin Ouyang
随着操作环境和工作机制的日益复杂，软失效与硬失效的竞争过程已成为理论和工程实践研究的关键问题。特别是两种失效模式的相关性和冲击到达时间的随机性日益受到重视。本文提出了一种考虑区域冲击效应和复杂冲击到达时间分布的两相竞争失效分析方法，其中冲击和退化都会导致相变。通过考虑冲击与损伤之间的分区比例关系，建立了分区冲击效应。同时，讨论了冲击到达时间的复杂性，建立了基于相位型的冲击到达时间模型。更重要的是，为了说明更好的理解，所提出的模型的调查遵循两步程序（从简单到复杂），并根据一系列有意义的统计理论推导出两种情况的分析可靠性解决方案。进行了全面的验证研究，以证明所提出的解决方案的可行性和有效性。
With the complexity of operating environment and working mechanism growing, the competing process between soft failure and hard failure has become a key issue in both theoretical and practical engineering study. Particularly, the dependence of two failure modes and the shock arrival time randomness have been increasingly highlighted. In this paper, a novel two-phase competing failure analysis method considering zoned shock effects and complicatedly distributed shock arrival time is proposed, where both shock and degradation can result in phase changing. The zoned shock effects are established by considering the zoned proportional relations between shock and its damage. Meanwhile, the complexity of shock arrival time is discussed and a Phase-Type based model is constructed accordingly. More importantly, to illustrate a better understanding, the investigation of the proposed model follows a two-step procedure (from the simple to the complex) and the analytical reliability solutions are derived for both situations based on a series of meaningful statistical theories. A comprehensive verification study is carried out to demonstrate the feasibility and effectiveness of the proposed solution.