Influence Analysis of Wheel Polygon Wear Parameters on Dynamic Performance of Subway Vehicle
The influence of wheel polygon wear on vehicle dynamics in different states was studied.The rigid-flexible coupling dynamics model of a metro B-type vehicle with wheel-rail flexibility was established,and the influence of the harmonic wave amplitude of wheel polygon order on the vehicle dynamics performance such as wheel-rail vertical force,wheel-rail vibration and running stability was calculated.The results show that the vertical force of the wheel and rail increases gradually with the increase of the amplitude of order harmony wave.The order 14 and 18 is the main cause of vibration of wheelset and axle box with harmonic amplitude change.Among the kinetic indexes,the load shedding ratio of wheel weight displays the greatest effect at 18 order and 0.04 mm.The wheel polygon increases the vertical dynamic displacement and vibration acceleration of rail,and the harmonic amplitude has more influence on the vibration characteristics of rail.It is suggested that flexible wheel and rail be manufactured and the wheel and rail at 18 steps and 0.04 mm be repaired and polished so as to improve the dynamic performance and traffic safety.
万方数据
维普
