在动车组运行速度快速提高的今天，通过探究动车组牵引电机设备的转子振动模

In today's fast-increasing speed of EMUs, by exploring the rotor vibration model of the traction motor equipment of the EMUs, the stability, reliability and smoothness of the EMUs in operation are guaranteed. In this study, the finite element model of the rotor is constructed by using the finite element algorithm, and the rotor model is used to simulate the rotor of the traction motor according to the radial vibration of the rotor. The influence of factor changes on the vibration characteristics of the rotor system is analyzed, and finally the radial vibration effect on the rotor under the influence of various factors is analyzed through simulation. The results show that in the bending mode analysis of the rotor system, the rotor presents four bending modes; in the analysis of the influence factors of the radial vibration of the rotor system, the angle of unbalanced magnetic pull, the angle of rotor gravity, and the angle of rotor bending stiffness are compared. The analysis of the influence of the radial vibration of the rotor shows that the unbalanced magnetic tension increases the amplitude of the rotor and reduces the natural frequency of the radial vibration of the rotor system. In the influence of gravity, the radial dimension of the axis track and the displacement spectrum take the gravity into consideration. There is no significant difference from the case when gravity is not considered; when the position of the axis track is relatively static, the offset distance of the rotor center decreases with the increase of stiffness. The amplitude of the 0.8k0 rotation frequency component is the largest; in the bending-torsion coupling analysis, the amplitude of the largest is The frequency is the torsional vibration of the external torque frequency of the excitation, around 840. Therefore, through the research in this article, it is found that radial load will cause torsional vibration of multiple frequencies in the torsional vibration of the rotor, and torsional load will also cause bending torsional vibration of multiple frequencies in the torsional vibration of the rotor, which can be a later EMU. The vibration analysis of the rotor in the traction motor provides a reference basis.

Today, by exploring the rotor vibration model of the traction motor equipment of the locomotive set, the stability, reliability and stability of the locomotive group in operation are guaranteed. In this study, by using finite elements algorithm to build the rotor finite elements model, and for the radial vibration of the rotor, the rotor model is used to simulate the traction motor rotor, which analyzes the influence of the main factors such as unbalanced magnetic pull force, rotor gravity, rotor bending stiffness and torsional load on the vibration characteristics of the rotor system, and finally analyzes the effect of radial vibration on the rotor system through simulation. The results show that in the analysis of the bending mode of the rotor system, the rotor is presented as four types of bending vibration, and in the analysis of radial vibration factors of the rotor system, the radial direction of the rotor is viewed from the angle of unbalanced magnetic pull force, the angle of rotor gravity and the angle of rotor bending stiffness. The effect of vibration is analyzed, and it is found that the unbalanced magnetic pull increases the amplitude of the rotor and reduces the inherent frequency of radial vibration of the rotor system, while in the influence of gravity, there is no obvious difference between the radial dimension of the axis trajectory and the displacement spectrum when considering gravity and not considering gravity When the position of the axis trajectory is relatively stationary, the offset distance of the rotor center decreases by 0.8k0 the amplitude of the rotor component with increasing stiffness, and in the bending coupling analysis, the largest amplitude is the torque of the external torque of the exclamation, which is about 840. Therefore, through the research of this paper, it is found that radial load will cause the twisting vibration of multiple frequencies in the torsional vibration of the rotor, and the torsional load will also cause the bending and twisting of multiple frequencies in the bending vibration of the rotor, which can provide a reference basis for the vibration analysis of the rotor in the traction motor of the later motor group.

With the rapid improvement of EMU speed, the stability, reliability and stability of EMU are guaranteed by exploring the rotor vibration model of EMU traction motor equipment. In this study, the finite element model of rotor is constructed by using finite element algorithm. In view of the radial vibration of rotor, the rotor model is used to simulate the rotor of traction motor. The influence of unbalanced magnetic pull, rotor gravity, bending stiffness and torsional load on the vibration characteristics of rotor system is analyzed. Finally, the influence of various factors on the vibration characteristics of rotor system is analyzed by simulation simulation The radial vibration effect of rotor. The results show that in the analysis of the bending mode of the rotor system, the rotor presents four bending modes. In the analysis of the factors affecting the radial vibration of the rotor system, the effect analysis of the influence of the unbalanced magnetic tension angle, the rotor gravity angle and the rotor bending stiffness angle on the rotor radial vibration is analyzed respectively. It is found that unbalanced magnetic pull increases the amplitude of the rotor and makes the radial vibration of the rotor system increase The natural frequency is reduced; in the gravity influence, there is no obvious difference between the radial dimension and displacement spectrum of the axis track when gravity is considered and gravity is not considered; the offset distance of rotor center decreases by 0.8k0 frequency component with the increase of stiffness when the position of the axis track is relatively static; in the bending and torsion coupling analysis, the maximum amplitude is the torsional vibration with the frequency of the external moment, It's around 840. Therefore, through the research in this paper, it is found that radial load can cause multiple frequency torsional vibration in the torsional vibration of rotor, and the torsional load will also cause bending torsional vibration of multiple frequencies in the bending vibration of rotor, which can provide reference for vibration analysis of rotor in traction motor of EMU in the later period.<br>