| 质量偏心旋转机械碰摩故障特征及全息谱分析 |
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| 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. |
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| 作者姓名： | 刘献栋 李其汉 |
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| 作者单位： | 北京航空航天大学 |
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| 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。
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| 关 键 词： | 旋转 机械 质量偏心 摩擦 全息诊断 |
| 收稿时间： | 7/1/1997 12:00:00 AM |
| 修稿时间： | 9/1/1997 12:00:00 AM |
IMPACT-RUB FAULT CHARACTERISTICS AND HOLOSPECTRUM ANALYSIS OF ROTATING MACHINERY WITH IMBALANCE |
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| 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. |
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| Authors: | Liu Xiong and Li Qihan |
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| Institution: | 4th Dept.Beijing University of Aeronautics and Astronautics,Beijing 100083;4th Dept.Beijing University of Aeronautics and Astronautics,Beijing 100083 |
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| 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. |
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| Keywords: | Rotating machinery Imbalance Rubbing Holographic diagnostics |
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