Research on the Influence of Wheel Polygon on Rail Corrugation in the Curve Track
In order to study the impact of wheel polygon on rail corrugation,which is common in curve sections of subways,a vehicle-track coupling model was established using the multi-body dynamics software UM,and the simulation was conducted on the small radius curve section.By changing the order of the wheel polygon,the trend of wheel-rail creep characteristics was analyzed,and then the generation and development of corrugation were studied by employing a rail wear calculation model.The results show that,with the increase of the wheel polygon order,the creepage of the inner rail decreases,the creepage of the outer rail increases,and the creep force does not change much and shows various degrees of saturation,where the inner rail is more prone to corrugation.At the same time,the peak value of corrugation characteristic frequency on the spectrum always appears at the passing frequency of the wheel polygon.With the increase of running times,the peak value of corrugation characteristic frequency gradually increases,and the growth rate gradually slows down.
wheel polygonrail corrugationvehicle-track coupling dynamics modelcreepage/creep forcecorrugation development
NETL
NSTL
万方数据
