可变阻抗滑动轴承的动态特性及其对转子不平衡响应的影响

Dynamic Characteristics of the Variable Impedance Journal Bearing and Its Influence on Unbalance Responses of a Rotor

讨论了可变阻抗滑动轴承的工作原理、理论模型及其油膜动力学系数的计算方法，并分析了由可变阻抗滑动轴承支承的转子不平衡响应，结果表明这种轴承有可在机器运行条件下有效地改变系统临界速度和不平衡响应幅值等动力学特性。

The principle of a variable impedance journal bearing is described,a theoretical model and the oil film dynamic coefficient calculation method of the bearing are presented.The unbalance responses of a flexible rotor supported in the variable impedance journal bearings are also analyzed.The results show that the bearing has the feature of altering the system critical speeds and lowering the unbalance response amplitude of the rotor running in the new bearings.