Abstract:The typical passing frequency of the corrugation was obtained by analysing the measured data of the rail corrugation of the common fastener track section on a metro line. Then, the three-dimensional solid finite element model was established and the modal analysis was carried out. It was found that the typical passing frequencies of the measured corrugation are close to the frequencies of some bending modes of the track structure. Finally, based on the theory of friction work, the wear calculation model was established and the simulation was carried out. The frequency characteristics and development process of the corrugation were analysed and studied. The results showed that the peak value of the common fastener track at the low frequencies is relatively high, and the peak frequency is basically the same at different vehicle speeds. Combining the wear superposed graph and one-third octave diagram, it can be concluded that at the same speed, with the increase of the superposition number, the superposition position of the peak and valley of the corrugation is the same respectively, and the characteristic frequency is the same; and at different speeds, the characteristic frequencies of the corrugation do not change with the change of the speed, which reflects the characteristics of the fixed position and frequency of the corrugation. At the speed of 80 km?h-1 and 60 km?h-1, the corrugation is more likely to occur in the frequency band of 40 Hz and 80 Hz, while at the speed of 40 km?h-1, there is mainly uniformity wear on the rails. At the same time, the speed of the vehicle has a certain influence on the growth of the corrugation. The higher the speed, the greater the overall wear loss, but the development speed of the wear does not completely increase with the increase of the vehicle speed.
