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首页> 《中国测试》期刊 >本期导读>多类型冲击的竞争失效过程可靠性建模研究

多类型冲击的竞争失效过程可靠性建模研究

165    2019-12-30

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作者:刘鑫1,2, 贾云献1, 李孟涵3, 周杰1

作者单位:1. 陆军工程大学石家庄校区, 河北 石家庄 050003;
2. 军事科学院系统工程研究院, 北京 100082;
3. 河北工业大学, 天津 300400


关键词:变失效阈值;多类型冲击过程;竞争失效;可靠性建模


摘要:

针对连续性退化过程中同时存在多种类型冲击的问题,在变失效阈值模型的基础上,建立考虑多种类型冲击的竞争失效模型。首先,基于变阈值失效模型分析多种冲击类型同时存在时对系统可靠性的影响,给出模型的主要失效模式;然后结合极值冲击模型给出竞争失效可靠性建模的一般方法,求解竞争失效可靠性模型的解析表达式;最后,以某微型发动机为研究对象,对该文提出的方法进行对比验证,证明该方法能有效防止对系统可靠性的盲目乐观估计,防止突发故障的发生。


Research of reliability modeling for competing failure considering multiple shock processes
LIU Xin1,2, JIA Yunxian1, LI Menghan3, ZHOU Jie1
1. Shijiazhuang Campus, AEU, Shijiazhuang 050003, China;
2. Institute of Systems Engineering, Academy of Military Sciences, Beijing 100082, China;
3. Hebei University of Technology, Tianjin 300400, China
Abstract: The system is affected by the shock process during the operation, and the system failure is due to the competing result of the continuous degradation process and the shock process. Aiming at the problem that multiple shock processes may exist during the continuous degradation process, a competing failure model considering multiple shock processes is established. Firstly, the multiple shock influence for the system is studied based on the competing failure model with shift thresholds, and the failure modes are introduced. Then, the competing failure model is established based on the extreme shock model and the analytical expression of the proposed model is derived. Finally, taking a micro-engine as the object, the proposed method is tested to demonstrate that its effectiveness to prevent sudden failure occurrence.
Keywords: shift thresholds;multiple shock processes;competing failure;reliability modeling
2019, 45(12):7-13  收稿日期: 2018-07-30;收到修改稿日期: 2018-09-03
基金项目: 国家自然科学基金项目(71401173)
作者简介: 刘鑫(1989-),男,山东淄博市人,助理研究员,博士,研究方向为可靠性、装备故障诊断及寿命预测
参考文献
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