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质量偏心旋转机械碰摩故障特征及全息谱分析
引用本文:刘献栋,李其汉. 质量偏心旋转机械碰摩故障特征及全息谱分析[J]. 航空动力学报, 1998, 13(4): 428-430,462
作者姓名:刘献栋  李其汉
作者单位:北京航空航天大学
摘    要:本文针对仅考虑质量偏心的Jefcot转子碰摩的动力学方程,用二维全息谱理论研究了各阶谐波特性,得出碰摩的重要特征;分析了摩擦系数、转速对进动规律的影响,发现在摩擦系数较小时不平衡力引起的规则正进动起决定作用,较大时一定转速下将出现拟周期运动及失稳。

关 键 词:旋转   机械   质量偏心   摩擦   全息诊断
收稿时间:1997-07-01
修稿时间:1997-09-01

IMPACT-RUB FAULT CHARACTERISTICS AND HOLOSPECTRUM ANALYSIS OF ROTATING MACHINERY WITH IMBALANCE
Liu Xiong and Li Qihan. IMPACT-RUB FAULT CHARACTERISTICS AND HOLOSPECTRUM ANALYSIS OF ROTATING MACHINERY WITH IMBALANCE[J]. Journal of Aerospace Power, 1998, 13(4): 428-430,462
Authors:Liu Xiong and Li Qihan
Affiliation:4th Dept.Beijing University of Aeronautics and Astronautics,Beijing 100083
Abstract:With respect to the impact-rub dynamic equations of Jeffcott rotor only with imbalance,the characteristics of every harmonic wave in the spectrum domain are studied according to the 2-dimension holospectrum theory,and an important feature of the impact-rub is obtained.The effects of friction coefficient and rotating velocity on the precession are analysed.It is discovered that the regular forward precession resulting from unbalancing force plays a critical role when the friction coefficient is small,but as the friction coefficient is enlarged,the quasi-periodic precession or instability will appear at certain rotating velocity.
Keywords:Rotating machinery Imbalance Rubbing Holographic diagnostics  
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