Abstract
A coupled vehicle-track dynamic mode is put forward to investigate the effect of crosswind on high speed railway vehicle running safety. The model considers the track motion respect with to the vehicle running on it, therefore characterizes the effect of the rail support by the periodical discrete sleepers on the vehicle/track interaction. The steady aerodynamic forces caused by crosswind are modeled as the ramp shape external forces exert on the car body. The numerical analysis investigates the effects of the crosswind speed and the vehicle speed on the dynamic behavior of the vehicle/track in detail. Then, the vehicle overturning criteria and the wheel rise with respect to the rail are calculated and used to assess the railway vehicle running safety. The numerical results obtained indicate that the crosswind has a great influence on the whole vehicle running safety when the vehicle is just entering the steady crosswind scenario.
