- ISSN 0258-2724
- CN 51-1277/U
- EI Compendex
- Scopus
- Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
- Chinese S&T Journal Citation Reports
- Chinese Science Citation Database
| Citation: | XIAO Hong, CHEN Xin, ZHAO Yue. Analysis of Unilateral Rail Corrugation Mechanism Based on Friction Self-Excited Theory[J]. Journal of Southwest Jiaotong University, 2022, 57(1): 83-89, 119. doi: 10.3969/j.issn.0258-2724.20200033
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In order to analyze the causes of rail corrugation in curve section of heavy haul railway, a refined wheel-rail three-dimensional contact model is established based on the friction self-excited vibration theory. The influences of different stiffness, friction coefficient and superelevation on the unstable friction self-excited vibration of wheel-rail system were discussed, and the internal causes of single rail corrugation were revealed, and the transmission and evolution process of single rail corrugation were analyzed by means of the explicit dynamic model. The results show that the mismatch between superelevation and actual running speed is the main cause of unilateral rail corrugation. The corrugation of the inner rail will lead to the instability of the wheel/rail system, and the vibration will be transmitted to the outer rail, which will induce corrugation of the rails on both sides of the small radius curve section. By properly improving the vertical and lateral stiffness of fasteners and controlling the wheel-rail friction coefficient below 0.4, the tendency of unstable vibration of wheel-rail system can be effectively reduced, and the development of ripples can be restrained.
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