Development characteristics of corrugation at different passing speeds

By using the vehicle-track interaction model and the wear calculation model, the development characteristics of rail prole wear and the longitudinal characteristics of rail wear development of the track-vibration-absorber fastener tangential track at different passing speeds were analyzed. The results of rail prole wear analysis show that when the iteration times increases, the wear ranges and wear depths of left and right rails at the corrugation trough/crest position are close. Meantime, the wear depths of rail prole and wave depth amplitudes at the corrugation trough/crest position in discrete passing speed modes are signicantly lower than those in constant passing speed mode. The results of rail longitudinal wear analysis show that with the increase of vehicle running times, the characteristic frequencies of corrugation do not change under different passing speed modes, which re frects the fexed frequency feature of corrugation, and the irregularity levels corresponding to characteristic frequencies of rail longitudinal wear under the three passing speed modes show a decreasing trend in turn. Compared with the constant passing speed mode, the discrete passing speed modes can signicantly decrease the rail prole wear and the development degree of rail wear at the characteristic frequencies.