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首页> 外文会议>International Symposium on Stability Control of Rotating Machinery(ISCORMA-4); 20070827-31; Calgary(CA) >THE INFLUENCE OF LINEAR AND NONLINEAR MODES ON THE DRY FRICTION BACKWARD WHIRL IN ROTOR/STATOR SYSTEMS
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THE INFLUENCE OF LINEAR AND NONLINEAR MODES ON THE DRY FRICTION BACKWARD WHIRL IN ROTOR/STATOR SYSTEMS

机译：线性和非线性模式对转子/定子系统干摩擦向后旋转的影响

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摘要

In this paper, the modes of the coupled linear and nonlinear rotor/stator systems of a general rotor/stator model, accounting for both the dynamics of the rotor and the stator as well as the friction and the deformation at the contact surfaces, are first calculated. Then, the existence condition and the whirl frequencies of the dry friction backward whirl of the model are derived. Finally, a method to predict the onset condition of dry whip under imbalance is presented. It is found that there exist two regions of the dry friction backward whirl with different backward whirl frequencies. The two existence regions may be isolated or overlapped depending mainly on the contact stiffness. The information of the linear and the nonlinear natural frequencies of the coupled rotor/stator system is very useful in deriving the features related to the dry friction backward whirl.
机译：在本文中，首先考虑一般转子/定子模型的线性和非线性转子/定子耦合系统的模式，该模式考虑了转子和定子的动力学以及接触表面的摩擦和变形，计算。然后，推导了模型的干摩擦后向旋转的存在条件和旋转频率。最后，提出了一种在不平衡状态下预测干鞭发生状况的方法。发现干摩擦后向回旋存在两个区域，它们具有不同的后向回旋频率。主要取决于接触刚度，两个存在区域可以隔离或重叠。转子/定子耦合系统的线性和非线性固有频率信息对于推导与干摩擦后向旋转有关的特征非常有用。

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