Computation and Analysis of High Frequency Vibration of Railway Wheels Using 2D Axisymmetric Model

In this paper,the modal analysis of railway wheels is carried out using 2D axisymmetric model.Based on the computation results,the dynamic response of the wheel is calculated using modal superposition method,and the dynamic compliance of the wheel is provided.In the computation of the dynamic response of the wheel,both the elastic modes and the rigid body modes of the wheel are considered.In addition,the difference of the vibration modes between a single wheel and a wheelset is analyzed,and on this basis some improvement methods are presented.The results show that the modes,involving axle modes and the rigid body modes of the wheel,have some influences on the dynamic response in the frequency band below 2 000 Hz.The vibratory response of the wheel,calculated by using combined modes of single wheel and wheelset,is in good agreement with that of the wheelset in the frequency range from 50 Hz to 5 000 Hz.