【摘要】 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.更多还原

【Abstract】 From the Kollmann-Wolf’s experiments we know that a rotorpartially filled with an inviscid,incompressible fluid may undergo a self-ex-cited unstable vibration above the critical speed.In this paper,the vibra-tional characteristics of the rotor outside the unstableregion is studied.Thenumerical results obtained by the asymptotic theory show that asynchronousvibration may also occur above the unstable region.The intensity of asyn-chronous vibration,which is greater than that of synchronous vibration,in-creases when the rotating speed goes up.The whirl frequency is a kind ofnatural frequency which is smaller than the rotating frequency.But the ratiois basically constant.The above conclusions were verified in the test andagreed extremely well with the experimental results.更多还原