西南交通大学学报Issue(3)：507-512,6.DOI:10.3969/j.issn.0258-2724.2014.03.021
机械零部件失效相依方向可靠性模型
Reliability Model for Failure Dependence Direction of Mechanical Components
摘要
Abstract
In order to determine the dependence direction of correlated failures in the reliability calculation of mechanical structural systems,a reliability variable determination model was established under a linear regression background according to properties of the linear dependent coefficient. Using the Copula regression function,the model was expanded to determine directions of correlated failures in the general asymmetrical structures. To verify its validity,the expanded model was applied to a locomotive axle to determine the correlated failure direction of wear failure and deformation failure of the axle. The calculated Skewness coefficients of wear loss and deformation were 2. 362 × 10 -6 and 9. 665 × 10 -33 respectively. The results indicate that the wear failure was the dominant mechanism, which is consistent with the actual failure form of the axle. This verifies the effectiveness of the model.关键词
失效相关性/相依方向/线性回归/Copula回归函数/可靠性Key words
failure correlation/dependence direction/linear regression/the Copula regression function/reliability分类
通用工业技术引用本文复制引用
梁红琴,唐家银,何平,王健鹏..机械零部件失效相依方向可靠性模型[J].西南交通大学学报,2014,(3):507-512,6.基金项目
国家自然科学基金资助项目（51175439，51205326）；中央高校基本科研业务费专项资金资助项目（SWJTU12CX058；SWJTU12ZT14）；教育部人文社会科学研究青年基金资助项目（11YJCZH154）；中国铁路总公司科技研究开发计划项目（2013J006-B）；四川省科技厅基础应用项目 （）
