Influence of Frequency-selective Damper on Locomotive Lateral Dynamic Performance
Under the condition of low wheel-rail contact conicity,the railway vehicle is prone to carbody hunting instability.With the wear of wheel,the equivalent conicity increases and excessive equivalent conicity will cause bogie hunting instability.In order to improve the adaptability of the vehicle hunting stability to the wear stage of different wheel-rail contact conditions,a frequency-selective damping damper(FSD)is proposed to improve the carbody and bogie hunting stability simultaneously.The principle of the FSD damper is introduced,the mathematical model of the FSD and the locomotive dynamics model are respectively established by Simulink and Simpack software,and the influence of frequency-selective damping yaw damper and secondary lateral damper on the carbody and frame lateral accelerations are studied.The simulation results show that,compared to conventional yaw dampers and secondary lateral dampers,the frequency-selective damping yaw damper and secondary lateral damper can improve the adaptability of locomotive hunting stability to equivalent conicity.Among them,the frequency-selective damping yaw damper improves more significantly,and the peak values of the carbody lateral acceleration under the low conicity condition and the frame lateral acceleration under high conicity condition can be reduced by more than 40%compared with conventional dampers.
万方数据
维普
