Effect of Rail Corrugation on Initiation and Development of Polygonal Wear on High-speed Train Wheels

doi:10.3901/JME.2020.17.198

Abstract

Abstract: The polygonal wear of train wheels occurs in rail transport commonly and will increase the wheel-rail interaction force dramatically and have a bad effect on the safety and comfort of the train. The mechanism of the polygonal wear needs to be studied. The polygonal wear looks like the corrugated wear of rail, the former occurs on wheels and the later occurs on rails. So, the relationship between the rail corrugation and polygonal wear deserves further study. The polygonal wear prediction model is developed to study the effect of rail corrugation on initiation and development of polygonal wear. The research shows that the rail corrugation can lead to the periodic fluctuation of key wear parameters such as wheel rail normal force and creep slip rate along the wheel circumference. But, restricted by the randomness of the position of the wheel-rail contact point, the wavelength of the rail corrugation and the circumference of the wheels, it is hard to say that the rail corrugation lead to the polygonal wear on wheels. And the rail corrugation is not the root cause of the polygonal wear on wheels. The results obtained in this investigation may be helpful for the further study on the mechanism of polygonal wear of the wheels.

Key words: polygonal wear, rail corrugation, high-speed train, train/track coupling dynamics model, mechanism

CLC Number:

U270

WU Yue, HAN Jian, ZUO Qiyu, JIN Xuesong, XIAO Xinbiao, LIANG Shulin. Effect of Rail Corrugation on Initiation and Development of Polygonal Wear on High-speed Train Wheels[J]. Journal of Mechanical Engineering, 2020, 56(17): 198-208.

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