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力学与实践 ›› 2013, Vol. 35 ›› Issue (6): 65-69.doi: 10.6052/1000-0879-13-279

• 应用研究 • 上一篇    下一篇

压缩机转子弯曲振动的可靠性灵敏度研究

吕春梅1, 张义民1, 刘宇1, 杜永英2, 周娜1   

  1. 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
  • 收稿日期:2013-07-01 修回日期:2013-10-09 出版日期:2013-12-08 发布日期:2013-12-19
  • 通讯作者: 吕春梅,1975年生,女,博士,讲师,从事动力学和机械可靠性研究,E-mail:chmlv@me.neu.edu.cn E-mail:chmlv@me.neu.edu.cn
  • 基金资助:

    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.

RELIABILITY SENSITIVITY STUDY OF THE BENDING VIBRATION OF THE COMPRESSOR ROTOR

LÜ Chunmei1, ZHANG Yimin1, LIU Yu1, DU Yongying2, ZHOU Na1   

  1. 1 School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110819, China;
    2 School of Mechanical Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China
  • Received:2013-07-01 Revised:2013-10-09 Online:2013-12-08 Published:2013-12-19

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.

关键词:

转子|弯曲振动|可靠性|灵敏度

Abstract:

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".

Key words:

rotor|bending vibration|reliability|sensitivity

中图分类号: 

  • TH212