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由Kollmann-Wolf的试验知道,部分充有无粘不可压缩液体的转子系统,在其临界转速之上存在一个自激失稳区.本文进一步研究了系统在其自激失稳区以外的振动特性.渐近法的计算结果表明:在自激失稳区之上,系统的振动以异步振动为主,其强度随着转速的增大而增大,其频率是小于旋转频率的固有频率中的一个,且异步振频与旋频之比跟旋频无关.以上结论在实验中得到了证实,计算结果与实验值之间具有极好的一致性.
It is known from Kollmann-Wolf’s test that a rotor system partially filled with a viscous and incompressible liquid has a self-destabilizing zone above its critical speed. This paper further studies the vibration characteristics of the system beyond its self-excitation inactivation zone The results of asymptotic method show that the vibration of the system is dominated by asynchronous vibration above the self - excitation zone of instability, its intensity increases with the increase of rotational speed, and its frequency is less than the natural frequency of the rotation frequency One, and the ratio of asynchronous vibration to frequency has nothing to do with the frequency. The above conclusion has been confirmed in the experiment, and the calculated results are in good agreement with the experimental values.