双转子临界转数系统建模与方程的建立

The establishment of model and equation of dual rotor critical speed system

在工程转子动力学分析中,为了更好地耦合多个转子系统,通常将系统内部粘性阻尼、陀螺力矩、滞后阻尼和横向剪切变形等因素考虑到有限元模型的建立当中。本文通过有限元单法建立转子轴承系统的动力学模型,进行了双转子系统运动方程的推导。

In analysis the rotor dynamics, in order to better coupling multiple rotor system, the internal viscous damping, hysteretic damping and gyroscopic moment, transverse shear deformation and other factors should be considered in the establishment of the finite element model system. The dynamic model of the bearing rotor system is established byfinite element method, the derivation of the dual rotor system the equations of motion.