Application of an inclined, spinning ball-on-rotating disc apparatus to simulate railway wheel and rail contact problems

作者：Xi, Yinhu^*; Bjorling, Marcus; Shi, Yijun; Mao, Junhong; Larsson, Roland

来源：Wear, 2017, 374: 46-53.

DOI：10.1016/j.wear.2016.12.034

• Spinning ball-on-rotating disc apparatus
• Wheel and rail contact
• Lateral creepage
• Spin creepage

Railway wheel-rail contacts involve various combinations of slip, rolling, and creepage. Traditionally, a twin-disc apparatus is used to simulate such problems. However, there are out of plane forces and motions involved in the actual situation. Therefore, the possibility of using a commercially-made, inclined-axis spinning ball-on-disc test rig was investigated to better simulate wheel and rail contact problems. By setting two angle parameters both the lateral and spin creepage can easily be applied to the contact. Traction measurements were conducted, and good agreement was found by comparing the present results with other available experimental data. The effects of the spin creepage on wear were studied in particular. An asymmetrical wear pattern was obtained from cases that applied a low longitudinal creepage and a spin creepage, corresponding to a rail running on a curved track. To the best of the authors' knowledge, this work is the first of its kind to be done using a laboratory-scale tribometer.

• 出版日期2017-3-15
• 单位西安交通大学