压缩机转子弯曲振动的可靠性灵敏度研究  

RELIABILITY SENSITIVITY STUDY OF THE BENDING VIBRATION OF THE COMPRESSOR ROTOR

作　　者：吕春梅[1] 张义民[1] 刘宇[1] 杜永英[2] 周娜[1] 

机构地区：[1]东北大学机械工程与自动化学院,沈阳110819 [2]沈阳化工大学机械工程学院,沈阳110142

出　　处：《力学与实践》2013年第6期65-69,共5页Mechanics in Engineering

基　　金：国家自然科学基金(51305071;51175071;51105067);中央高校基本科研业务费专项资金(N110403005);科技部重大专项课题"高档数控机床与基础制造装备"(2013ZX04011011)资助项目

摘　　要：以转子系统H858型离心式压缩机为研究对象,利用MSC.Patran&Nastran软件对该转子系统弯曲振动情况下的固有频率进行分析,定义了系统振动问题的频率可靠性模式,并以此为基础,应用随机摄动技术、可靠性理论和灵敏度方法,推导出参数为正态随机变量时频率可靠性灵敏度的计算公式,并应用于转子系统弯曲振动情况下的频率可靠性灵敏度研究中,同时将理论分析结果与基于Nessus软件的有限元分析结果进行比较,进一步验证了所提方法的有效性.The rotor system（H858 compressor） is studied. The natural frequencies are obtained for the bending vibrations using the software ＂MSC.Patran ~ Nastran＂. The frequency reliability mode is defined and the equations for the frequency reliability sensitivity are mathematically expressed by using the random perturbation technique, the reliability theory and the sensitivity approach. The frequency reliability sensitivity of the rotor system is obtained by the above mentioned theory, and it is shown that the proposed method is accurate by comparing the results with the finite element results obtained by software ＂Nessus＂.

关 键 词：转子 弯曲振动 可靠性 灵敏度 

分 类 号：TH212[机械工程—机械制造及自动化]