Dynamic Performance of High-speed Train Passing Windbreak in Crosswind

Dynamics of a high-speed train passing a windbreak in crosswind were numerically simulated on the basis of the train aerodynamics and train dynamics.Taking the high-speed train passing a kind of windbreak at 350 km/h for example,the aerodynamic forces and dynamics responses of the high-speed train passing the windbreak were analyzed.When the high-speed train entered the windbreak and left the region of windbreak,the safety and comfort indexes became obviously worse.When the velocity of crosswind was 9.56 m/s,the maximum of the train lateral acceleration reached 2.5 m/s2;When the velocity of crosswind was 15.0 m/s,the derailment of train exceeded 0.7 and the wheel unloading exceeded 0.8.At last,a kind of windbreak with buffer equipment was advanced,which improved safety and comfort effectively when the high-speed train passed the windbreak.