Steady-state dynamics of a non-ideal rotor with internal damping and gyroscopic effects

被引：0
作者：
A. K. Samantaray
机构：
[1] Indian Institute of Technology,Department of Mechanical Engineering
来源：
Nonlinear Dynamics | 2009年 / 56卷
关键词：
Rotor dynamics; Gyroscopic system; Non-ideal source; Sommerfeld effect;
D O I：
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摘要：
A rotor driven by an ideal source, i.e., a source capable of delivering unlimited amount of power, becomes unstable beyond a certain threshold spin speed due to non-conservative circulatory forces. The circulatory forces considered in this paper arise out of rotating internal damping. If the drive is non-ideal then the rotor spin speed cannot exceed the stability threshold. This phenomenon is a type of the Sommerfeld effect. In this work, a DC motor driving four-degrees-of-freedom rotor with internal damping and gyroscopic effects is considered and the corresponding steady-state spin frequency and the whirl orbit amplitude are analytically derived as functions of the parameters of the drive and the rotor system.
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