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首页> 外文会议>8th Biennial Conference on Engineering Systems Design and Analysis 2006 vol.3 >OIL WHIP AND UNSTABLE WHIRLING IN ANISOTROPIC ROTORS ON LUBRICATED BEARINGS
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OIL WHIP AND UNSTABLE WHIRLING IN ANISOTROPIC ROTORS ON LUBRICATED BEARINGS

机译：润滑轴承中各向异性转子的甩油和旋转不稳

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摘要

The dynamics of rotors running on lubricated bearings is complex. While the linearized analysis allows to study the stability in the small and phenomena like oil whirl and oil whip, more complex behaviour, that may include chaotic motion, requires a fully nonlinear analysis. Since lubricated bearings behave like anisotropic supports, complex whirling pattern can be expected when the rotor is anisotropic. The aim of the present paper is to investigate to what extent the anisotropy of the rotor affects its dynamic behaviour. In particular, the interactions between the instability ranges due to rotating anisotropy and to oil whip are searched. The rotor models are built using DYNROT FEM code to build the basic rotor model and to obtain linearized solutions. The linear model of the rotor is then mated to nonlinerar bearing models and integrated numerically in time. Time domain results allow to draw some general conclusions applicable to simplified models as well as to real-world rotors.
机译：在润滑轴承上运行的转子的动力学很复杂。线性分析可以研究微小的稳定性以及诸如油涡流和油鞭之类的现象，而更复杂的行为（可能包括混沌运动）则需要完全非线性的分析。由于润滑轴承的行为就像各向异性的支撑，因此当转子是各向异性的时，可以预期会有复杂的旋转形式。本文的目的是研究转子的各向异性在多大程度上影响其动态性能。特别地，搜索由于旋转各向异性和油鞭引起的不稳定性范围之间的相互作用。使用DYNROT FEM代码构建转子模型，以构建基本转子模型并获得线性化解。然后将转子的线性模型与非线性轴承模型配对，并在时间上进行数值积分。时域结果可以得出适用于简化模型以及实际转子的一些一般性结论。

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