Dynamic Performance of Two-axle Radially Steered Rail Vehicle Based on Independent Wheel-Pairs
A backward inclination steering method on the steering issue of independent wheels was proposed to obtain the self-steering ability for the independent wheel-pair rail vehicle.The principle of the self-steering vehicle with inde-pendent wheel-pairs was described particularly.The independently rotating wheels can automatically steer with the help of the yaw moment generated by the lateral wheel-rail force and the arm of force concerning the backward inclination.The front and rear wheel-pairs being symmetrical about the center were turned in opposite directions,leaving the inde-pendent wheels in radial positions.The multi-body dynamics was used to analyze the self-steering performance of the in-dependent wheel-pair rail vehicle.The results show that the backward inclination has obvious influence on lateral dis-placements and yaw angles of the vehicle under the condition of straight tracks.Homologous hunting motion is observed for the vehicle with backward inclinations,which can automatically resume the center position on straight tracks.On curved tracks,the left front guiding wheel is endowed with large angles of attack.The backward inclination makes great contributions to the dynamic centering function for the vehicle until the vehicle returns to the track centerline finally.The independent wheel-pair rail vehicle with backward inclinations is endowed with finite steering ability on curved tracks.
万方数据
维普
