Study of the Main Factors Affecting the Increase in the Friction Coefficient of Interacting Surfaces of Rail Vehicles

IF 0.4 Q4 ENGINEERING, MECHANICAL Journal of Machinery Manufacture and Reliability Pub Date : 2024-05-27 DOI:10.1134/s1052618824700055

A. M. Keropyan, A. Yu. Albagachiev

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Abstract

As a result of theoretical studies, it was established that the coefficient of friction of the interacting surfaces of rail vehicles is significantly influenced by the roughness of the contacting surfaces, the actual contact area, the temperature in the contact zone of the wheel-rail system, and the speed of mutual sliding (slip) of the contacting surfaces. It has been established that, in order to ensure the strength criterion and reduce wear, it is necessary to limit the temperature in the contact zone of the wheel–rail system within 300°С by controlling the sliding speed of the wheel relative to the rail. It has been revealed that the effective functioning of the wheel–rail system can be realized through the interaction of the machined working surfaces of the wheel and rail with roughness Rz 20–40 µm. Implementation of the proposed technical solutions using tribological research methods will allow for the possibility of increasing the friction coefficient of wheel–rail systems by up to 27%.

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影响轨道车辆接触面摩擦系数增大的主要因素研究

摘要通过理论研究确定，轨道车辆相互作用表面的摩擦系数受接触面粗糙度、实际接触面积、轮轨系统接触区温度和接触面相互滑动（滑移）速度的显著影响。现已确定，为了确保强度标准和减少磨损，有必要通过控制车轮相对于轨道的滑动速度，将轮轨系统接触区的温度控制在 300°С 以内。研究表明，轮轨系统的有效运行可以通过轮子和导轨的加工工作表面（粗糙度 Rz 20-40 µm）的相互作用来实现。利用摩擦学研究方法实施建议的技术解决方案，可以将轮轨系统的摩擦系数提高 27%。

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来源期刊

Journal of Machinery Manufacture and Reliability ENGINEERING, MECHANICAL-

CiteScore

0.80

自引率

33.30%

发文量

期刊介绍： Journal of Machinery Manufacture and Reliability is devoted to advances in machine design; CAD/CAM; experimental mechanics of machines, machine life expectancy, and reliability studies; machine dynamics and kinematics; vibration, acoustics, and stress/strain; wear resistance engineering; real-time machine operation diagnostics; robotic systems; new materials and manufacturing processes, and other topics.