随机载荷多次作用下的零件失效率计算模型

王 正; 康 锐; 谢里阳

随机载荷多次作用下的零件失效率计算模型

1.
北京航空航天大学工程系统工程系, 北京 100191
2. 东北大学机械工程与自动化学院, 沈阳 110004

详细信息

作者简介:
王正(1981-),男,山西静乐人,博士后,wzneu@126.com.

中图分类号: TB 114.3; TH 122
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出版历程
- 收稿日期: 2008-04-24
- 网络出版日期: 2009-04-30

Failure rate model of components under random repeated load

1.
Dept. of System Engineering of Engineering Technology, Beijing University of Aeronautics and Astronautics, Beijing 100191, China
2. School of Mechanical Engineering & Automation, Northeastern University, Shenyang 110004, China

摘要

摘要: 运用顺序统计量理论和载荷-强度干涉模型建立了以载荷作用次数为寿命度量指标框架下的零件可靠度和失效率计算模型.分析了随机载荷多次作用时零件失效的过程,从随机载荷作用的统计学意义出发,运用顺序统计量建立了随机载荷多次作用下的零件可靠性模型.在此基础上,定义了以载荷作用次数为寿命度量指标框架下的失效率,给出了失效率计算的一般表达式,并建立了载荷多次作用时零件的失效率计算模型.最后,研究了零件可靠度和失效率随载荷作用次数的变化规律.该模型可用于指导产品的环境应力筛选试验以及其他可靠性试验.
- 载荷作用次数 /
- 顺序统计量 /
- 可靠度 /
- 失效率 /
- 载荷-强度干涉
Abstract: The models for calculating the reliability and failure rate of components were developed with the order statistic theory and load-stress interference model when the life of components was measured by the times of random load action. The failure mechanism of components when random load acts for multiple times was analyzed and from the statistic meaning of random load action, the reliability model of components under random repeated load was built with the order statistic. Further, the model for calculating the failure rate of a component was derived, and the relationship between reliability and times of load action and that between failure rate and times of load action were studied. The model proposed can be applied to direct ESS (environmental stress screening test) and other reliability experiments for products.
- times of load action /
- order statistic /
- reliability /
- failure rate /
- load-strength interference

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参考文献(1)

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