Design Method of Rail Grinding Profile Based on Wheel Rail Contact Relationship

When the railway track is damaged, it is essential to grind it in in a timely manner to enhance the wheel-rail contact performance. This paper relies primarily on the rolling radius difference function as the main design basis, taking the expected distribution between the wheel and the rail as the boundary condition. In cases where the abscissa of the rail is known, the Euler method is used to solve the differential equation to obtain the optimized ordinate of the rail. The profile of the rail is optimized, and the feasibility of the design method is verified through programmed algorithm. Based on the application results of the rail grinding profile design on the Wuhan-Guangzhou line, the rail light strip position and contact point distribution are more reasonable after grinding, the dynamic performance of the vehicle passing is improved, and the wheel-rail wear rate is reduced.