Study of Optimization of Rail Profile and Simulation of Wheel-Rail Contact Interface

Wheel-rail interaction plays an important role in the safety performance and comfort level of high-speed railway, especially the coupling of profile and tread. A new profile of the rail is designed as the optimization profile for high-speed railway. Five measurements about the wear and profile and simulation about the wheel-rail contact patch are carried out to analyze the effect of the new profile in the high speed railway in 18 months after the new high speed railway running. The measurement and simulation results show that the new profile and the standard wheelset treat are optimization contact the wear is small, and the contact pitch is narrow.