动压向心滑动轴承油膜失稳的可靠性灵敏度分析  

Reliability-based Sensitivity Analysis of Oil-Film Instability of Radial Journal Bearings with Hydrodynamic Lubrication

作　　者：赵群超[1] 张义民[1] 

机构地区：[1]东北大学机械工程与自动化学院,辽宁沈阳110819

出　　处：《东北大学学报（自然科学版）》2011年第6期831-833,858,共4页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金资助项目(50875039;51005228)

摘　　要：应用零部件可靠性灵敏度分析的理论方法,对动压润滑的向心滑动轴承进行了可靠性灵敏度分析.并对各个参数间的相关性作了相应的讨论,推导了某些重要参数之间的协方差,给出了解析表达式.不失准确性地对模型进行简化使得整个计算过程的效率大幅提高,最后通过数值仿真分析对理论推导结果进行了验证,为工程实际中动压润滑向心滑动轴承的选用和轴系整体刚度的设计提供一定的理论依据.According to the theory of components reliability sensitivity,the reliability-based sensitivity of radial journal bearings under the hydrodynamic lubrication are analyzed,in which some analysis about the correlation between the various parameters are carried out.Without losing the accuracy, the process of the calculation is substantially increased in efficiency by simplifying of the theoretical model,and finally the numerical simulation results are given to test the theoretical derivation.All of the analysis provides some theoretical basis for the selecting and using the hydrodynamic radial journal bearings and the stiffness design of whole shaft system in the engineering practice.

关 键 词：滑动轴承 油膜失稳 相关性 可靠性 

分 类 号：TB114.3[理学—概率论与数理统计]