Abstract: Abstract: Aiming at the situation that there are many types of rail vehicles in China and the parameters of different types of shock absorbers are quite different, the damping characteristics effect of the shock absorbers are studied. Using the dynamic simulation software SIMPACK to establish the vehicle system dynamics model, joining the measured orbit incentive of line of Wuhan-Guangzhou and considering the nonlinear relationship of the vehicle system, the dynamic performance index is calculated at the running speed of 300 km/h, and analysis of the effect of the combined damping of anti-yaw damper and secondary lateral damper on vehicle dynamic performance. The results show that reasonable combined damping parameters of anti-yaw damper and the secondary lateral damper can obviously improve the vehicle's dynamic performance. The stability of the vehicle are mainly affected by the damping of anti-yaw damper, and the influence of the secondary lateral damper is small. It is suggested that the selection of high-speed vehicle dampers should consider the combination effect of damping parameters, increase the anti-yaw damping appropriately, and reasonably reduce the lateral damping of the second system, which can provide theoretical basis for the selection and optimization of shock absorber parameters.

Key words: anti-yaw damper, lateral damper, damping characteristic, dynamic performance