暂态扭矩在多支承转子系统中的传递特性

Transfer Characteristics of the Transient Torque Excitation in Multi-support Rotor System

针对多支承转子系统的特点,建立了扭矩激励下多支承转子系统的力学模型。考虑扭矩激励及联轴器刚度对多支承转子系统的影响,推导出转子系统各支承轴承负荷对扭矩激励的敏感性方程。求解轴承负荷对扭矩激励的敏感度矩阵,仿真分析了暂态扭矩激励在多支承转子系统中的传递特性。结果表明:在暂态扭矩作用下,多支承转子系统各轴承负荷均出现变化;随着扭矩初始值的不断增大,多支承转子系统各支承负荷出现相应增大;越靠近扭矩加载位置,轴承负荷的变化量越大;在远离扭矩加载位置,轴承负荷出现突然增大现象。最后,建立了与仿真试验相同条件的试验台,试验验证了该仿真结果的正确性。

According to the characteristics of the multi-support rotor system,the mechanical model of the multi-support rotor system is established,the effect of torque excitation and coupling stiffness on the multi-support rotor system is considered,the sensitivity equation of the bearing load to torque excitation is derived,the sensitivity matrix of the bearing load to torque excitation is solved,and the transfer characteristics of the transient torque excitation in the multi-support rotor system is simulated.The results show that the bearing loads of each support of the multi-support rotor system change with the effect of transient torque.The bearing load of the multi-support rotor system increases as the initial value of the transient torque increases.In addition,the amount of change of the bearing load increases when the support is close to the location of the torque excitation.The phenomenon of a sudden increase of the bearing load appears in positions away from the torque excitation.Finally,the test is set with the same simulation conditions,and the results of the simulation are experimentally verified.