ABSTRACT
During high-speed train operating, high frequencies of wheel/rail vibrations became more and more acute, not only decreasing service life of devices in bogie and track, but also causing potential safety hazards. According to train/track investigations, the main reasons have been found as high frequency wheel/rail excitations caused by wheel polygonization and track corrugation; other reasons are bogie devices and track devices’ natural high frequencies. By field tests, this paper indicates that resonance caused by wheel polygonization and track corrugation are the main reasons of abnormal high frequency wheel/rail vibrations, resonance is also identical with specific running speed. Wheel turning and track grinding can efficiently decrease high-frequency vibrations; meanwhile, bogie and track devices’ natural high frequencies also would resonance with wheel/rail excitations, so these high frequencies during devices design should also be avoided.
