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Study on the Interaction between Wheel Polygon and Rail Corrugation in High-Speed Railways
Xiaotian Xu1, Xiaolu Cui1, Jia Xu1
1School of Mechanotronics & Vehicle Engineering, Chongqing Jiaotong University, Chongqing 400074, China.
Materials (Basel, Switzerland)
|December 23, 2022
Summary
Wheel and rail periodic wear, like wheel polygonization and rail corrugation, increases friction coupling vibration in high-speed railways. Wheel polygonization has a greater impact on vibration than rail corrugation.
Area of Science:
- Railway Engineering
- Tribology
- Vibrational Mechanics
Background:
- Wheel polygonization and rail corrugation are common periodic wear issues in high-speed railways.
- These wear patterns significantly compromise operational safety.
Purpose of the Study:
- To investigate the interaction between wheel polygonization and rail corrugation on high-speed railway long-slope sections.
- To analyze the influence of friction coupling vibration on these wear phenomena.
Main Methods:
- Established a simulation model for wheel-rail contact, incorporating polygonal wheel wear and corrugated rail wear.
- Conducted stability analyses of the wheel-rail system under periodic wear conditions.
- Compared four scenarios: smooth wheel/rail, polygonal wheel/smooth rail, smooth wheel/corrugated rail, and polygonal wheel/corrugated rail.
Main Results:
- Periodic wear on both wheels and rails, when correlated, amplifies wheel-rail system friction coupling vibration.
- Increased friction coefficient and wear depth (wheel polygon and rail corrugation) lead to a higher vibration trend.
- Wheel polygonization exerts a more significant influence on friction coupling vibration than rail corrugation.
Conclusions:
- The interplay between wheel polygonization and rail corrugation can exacerbate wear and vibration in high-speed rail systems.
- Understanding these competition mechanisms is crucial for mitigating wear and ensuring safety.
- Wheel polygonization is a dominant factor in the vibrational behavior of the wheel-rail system.
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