发动机汽缸壁耐磨性非概率可靠性评估和寿命预测  

Non-probabilistic reliability assessment and anti-wear life prediction of cylinder wall of the engine

作　　者：魏宗平[1] 秦少军[1] 王娟平[1] 

机构地区：[1]宝鸡文理学院机电工程系,宝鸡721016

出　　处：《机械设计与制造》2011年第7期194-196,共3页Machinery Design & Manufacture

基　　金：陕西省教育厅科研计划项目(09JK333);宝鸡文理学院重点科研计划项目(ZK09148)

摘　　要：针对现有的可靠性分析方法的缺陷与不足,将发动机汽缸壁允许的磨损量和其实际的磨损量用区间变量来进行描述,在确定出发动机汽缸壁磨损失效功能函数的基础上,建立起发动机汽缸壁耐磨性非概率集合可靠性的计算模型;利用稳健回归方法对发动机汽缸壁的实际磨损量拟合出相应的预测方程,基于非概率集合可靠性模型,提出了发动机汽缸壁磨损寿命的预测方法。通过对工程实例的分析与计算,表明了所提出方法的可行性和合理性,此方法具有一定的工程应用价值。In order to overcome the flaws and shortcomings of traditional reliability analysis method,the wear amount and allowable wear amount of the engine cylinder wall are described as interval variables.Non-probabilistic set-based reliability model of anti-wear of cylinder wall is established based on performance function of engine wearout failure.Then a predicting equation for wear amount of engine cylinder wall is fitted by robust regression.Based on non-probabilistic set-based reliability model,wear life prediction method of engine cylinder wall is presented,which feasibility and rationality is shown through practical engineering calculation and analysis,and proved to be valuable for engineering application.

关 键 词：汽缸壁 非概率集合可靠性模型 磨损 寿命预测 

分 类 号：TH16[机械工程—机械制造及自动化]