Effect of the Anti-Yaw Damper on Carbody Vertical Vibration and Ride Comfort of Railway Vehicle

Abstract

The theoretical research on means to reduce the vertical vibrations and improve the ride comfort of the railway vehicle relies on a mechanical model obtained from the simplified representation of the vehicle, while considering the important factors and elements affecting the vibration behaviour of the carbody. One of these elements is the anti-yaw damper, mounted longitudinally, between the bogie and the vehicle carbody. The anti-yaw damper reduces the lateral vibrations and inhibits the yaw motion of the vehicle, a reason for which this element is not usually introduced in the vehicle model when studying the vertical vibrations. Nevertheless, due to the position of the clamping points of the anti-yaw damper onto the carbody and the bogie, the damping force is generated not only in the yawing direction but also in the vertical and longitudinal directions. These forces act upon the vehicle carbody, impacting its vertical vibration behaviour. The paper analyzes the effect of the anti-winding damper on the vertical vibrations of the railway vehicle carbody and the ride comfort, based on the results derived from the numerical simulations. They highlight the influence of the damping, stiffness and the damper mounting angle on the power spectral density of the carbody vertical acceleration and the ride comfort index.

Research on the evolution law of dynamic performance of CR400BF EMU train based on stochastic dynamics simulation

“…Many scholars studied the impact of dynamics parameters of suspension component, wheel and rail profiles on the dynamics of high-speed EMU by choosing one parameter or several combinations of those parameters (Bai, Zeng, Shi, & Wu, 2020;M ad alina & Dragos, 2020;Hou, Hu, Zong, Guo, Luo, & Fan, 2021). These studies had yielded many meaningful results, but they only consider simple combinations of maximum and minimum values for a small number of parameters, without considering these parameters as random variables then systematically studying the distribution range and form of vehicle dynamics index when those parameters undergo random changes simultaneously.…”

A Meta-Heuristic Optimization Procedure for the Identification of the Nonlinear Model Parameters of Hydraulic Dampers Based on Experimental Dataset of Real Working Conditions

“…According to [9,10], an accurate modelling of the yaw damper is crucial to assess the vehicle dynamics. The correct estimation of the damper stiffness is also important in the evaluation of ride comfort performances: different studies [11,12,13] considered this effect when modelling yaw or vertical dampers.…”

Ride comfort assessment of high-speed rail vehicles: influence of yaw dampers installation angle

“…However, yaw dampers also affect the ride comfort performance. Their influence has been investigated through analytical models, as reported in [8][9].…”