Abstract
An improved method for simulation of the transient wheel-rail rolling contact (WRRC) was proposed. A 3D implicit/explicit finite element (FE) model was established to calculate the transient response of the wheel-rail system (WRS). The dynamic wheel-rail forces excited by rail weld joints were investigated to reveal the causes of corrugated wear on high-speed lines. The results show that the wheel-rail forces obtained by the proposed method can quickly converge to the steady-state values without obvious initial disturbance, and the convergence rate is almost independent of the wheel speed. The vibration in vertical direction of the track at 655.6 Hz excited by the weld joint is identified as the main cause for the corrugated wear in 125–160 mm on high-speed lines.
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