机械系统可靠性定量评价方法  

Review on Quantitative Evaluation Methods of Mechanical System Reliability

作　　者：高鹏[1] 谢里阳[2] 

机构地区：[1]辽宁石油化工大学机械工程学院,辽宁抚顺113001 [2]东北大学航空动力装备振动及控制教育部重点实验室,沈阳110819

出　　处：《失效分析与预防》2016年第1期37-41,共5页Failure Analysis and Prevention

基　　金：国家自然科学基金(51505207);国家自然科学基金(51175072);辽宁省教育厅科学研究一般项目(L2015298);辽宁省自然科学基金(2015020152)

摘　　要：随着机械产品结构和工作环境日益复杂,机械系统可靠性的正确评估对产品质量评价和全寿命周期管理具有重要的现实意义。简要介绍机械可靠性定量模型的建模原理、研究现状和存在的问题,指出尽管静态系统可靠性模型相对成熟,对传统应力强度干涉模型进行扩展可解决大部分机械零部件及机械系统的可靠性评估问题,但是,当机械零部件强度退化时,机械系统可靠性分析需要考虑时间因素,传统静态模型无法满足时变可靠性分析要求。因此,着重阐述了机械系统时变可靠性模型建模过程中有待解决的关键问题。With mechanical product structures and working environment becoming more and more complex,correct evaluation on mechanical system reliability has important practical significance for the product quality evaluation and the whole life cycle management. In this paper,modeling principles as well as research status and problems of the existing quantitative reliability models of mechanical systems are briefly introduced. It is pointed out thatthe research on static system reliability models is relatively mature and the traditional stress strength interference model can be extended to evaluate reliability of mostmechanical components and mechanical systems. However,when the strength of components degenerates,time has to be taken into consideration in reliability analysis of mechanical systems and traditional static reliability models are incapable of analyzing timedependent reliability of mechanical systems. Therefore,key problems in establishing time-dependent reliability of mechanical systems are described in this paper.

关 键 词：可靠性 机械系统 失效率 干涉模型 

分 类 号：TB114[理学—概率论与数理统计]