Xu Xiaotian, Cui Xiaolu, Xu Jia, Wen Xiaoxia, Yang Zongchao
School of Mechanotronics & Vehicle Engineering, Chongqing Jiaotong University, Chongqing 400074, China.
China Railway Materials Operation and Maintenance Technology Co., Ltd., Beijing 100036, China.
Materials (Basel). 2022 Dec 8;15(24):8765. doi: 10.3390/ma15248765.
The wheel polygonization and rail corrugation are typical wheel-rail periodic wear problems, which seriously affect the safe operation of high-speed railways. In the present paper, the interaction between the wheel polygon and the rail corrugation in the long-slope section of high-speed railways is mainly studied based on theory of friction coupling vibration. Firstly, the simulation model of the wheel-rail contact model is established, as well as the polygonal wear of the wheel and the corrugated wear of the rail. Then, the stability analyses of the wheel-rail system with periodic wear are studied, in which the four working conditions of smooth rail-smooth wheel, polygonal wheel-smooth rail, smooth wheel-corrugated rail and polygonal wheel-corrugated rail are compared. Finally, the competition mechanisms between the wheel polygon and rail corrugation under different parameters are discussed, including the wheel-rail friction coefficient and the depth of periodic wear of the wheel-rail system. The numerical results show that both the periodic wear of the wheel and rail with certain relevance will increase the friction coupling vibration of the wheel-rail system, which may aggravate the subsequent relevant wheel polygonal and rail corrugation wear. With the increase of the friction coefficient between wheel and rail, as well as the depth of the wheel polygon and rail corrugation, the vibration trend of the friction coupling vibration of the wheel-rail system increases gradually. Moreover, the proportion of the wheel polygon's influence on the friction coupling vibration of the wheel-rail system is greater than that of rail corrugation.
车轮多边形化和钢轨波磨是典型的轮轨周期性磨损问题，严重影响高速铁路的安全运行。本文基于摩擦耦合振动理论，主要研究高速铁路长坡区段车轮多边形与钢轨波磨之间的相互作用。首先，建立轮轨接触模型以及车轮多边形磨损和钢轨波磨的仿真模型。然后，研究具有周期性磨损的轮轨系统的稳定性分析，比较了钢轨光滑 - 车轮光滑、多边形车轮 - 光滑钢轨、光滑车轮 - 波磨钢轨和多边形车轮 - 波磨钢轨这四种工况。最后，讨论了不同参数下车轮多边形与钢轨波磨之间的竞争机制，包括轮轨摩擦系数和轮轨系统周期性磨损深度。数值结果表明，车轮和钢轨具有一定相关性的周期性磨损都会增加轮轨系统的摩擦耦合振动，这可能会加剧后续相关的车轮多边形化和钢轨波磨磨损。随着轮轨之间摩擦系数以及车轮多边形和钢轨波磨深度的增加，轮轨系统摩擦耦合振动的振动趋势逐渐增大。此外，车轮多边形对轮轨系统摩擦耦合振动的影响比例大于钢轨波磨。
