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针对发动机转子滚动轴承系统建立了有限元模型，将弹性轴段、刚性圆盘和弹性支承的动力方程集结后得到系统振动方程，分析计算了支承刚度对系统固有频率的影响。将转子不平衡惯性力和轴承支反力作为激励，求解了系统的稳定响应，得出了合理设计支承刚度和阻尼，可以改善转子系统的振动特性的结论。通过转子系统模拟实验，对该结论进行了验证。
A finite element model was established for the rotor-roller bearing system of the engine. The dynamic equation of the elastic shaft section, the rigid disk and the elastic support was collected to obtain the system vibration equation. The influence of the support stiffness on the natural frequency of the system was analyzed and calculated. The rotor unbalance inertial force and bearing support force are used as stimuli to solve the stable response of the system. The conclusion that the bearing stiffness and damping can be reasonably designed can improve the vibration characteristics of the rotor system is obtained. Through the rotor system simulation experiment, this conclusion is verified.