Dynamic stability of two rigid rotors connected by a flexible coupling with angular misalignment
Dynamic stability of two rigid rotors connected by a flexible coupling with angular misalignment
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DOI：
10.1016/s0022-460x(02)01627-9
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发表时间：
2003-09-11
影响因子：
4.7
通讯作者：
Al-Hussain, KM
中科院分区：
文献类型：
--
作者：
Al-Hussain, KM
研究了不对中对由柔性机械联轴器连接的两个转子在角不对中时稳定性的影响。本研究旨在了解角偏差对旋转机械稳定性的影响。利用李雅普诺夫直接法导出了两个不对中刚性转子非线性微分方程组的无量纲稳定性判据。每个转子的中间都连接有一个刚性盘，转子-盘组件安装在两个具有四个刚度和四个阻尼系数的流体动力轴承上。推导了两个不对中转子充分涡动稳定性的无量纲条件。为了更深入地了解柔性机械联轴器刚度和角度不对中对旋转机械稳定性的影响，以图形形式给出了稳定性条件。结果表明，角偏差或机械耦合刚度项的增加导致模型稳定区域的增加。(C)2003爱思唯尔科技有限公司版权所有。
The effect of misalignment on the stability of two rotors connected by a flexible mechanical coupling subjected to angular misalignment is examined. The study performed is to understand the effect of angular misalignment on the stability of rotating machinery. The dimensionless stability criteria of the non-linear system of differential equations of two misaligned rigid rotors are derived using Liapunov's direct method. A rigid disk is attached at the middle of each rotor, where the rotor-disk assembly is mounted on two hydrodynamic bearings with four stiffness and four damping coefficients. Sets of dimensionless conditions for sufficient whirl stability of the two misaligned rotors are derived. The stability conditions are presented in graphical form for deeper understanding of the effect of the flexible mechanical coupling stiffness and angular misalignment on rotating machinery stability. The results show that an increase in angular misalignment or mechanical coupling stiffness terms leads to an increase of the model stability region. (C) 2003 Elsevier Science Ltd. All rights reserved.