- ISSN 0258-2724
- CN 51-1277/U
- EI Compendex
- Scopus
- Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
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| Citation: | CUI Xiaolu, TANG Chuanping, BAO Pengyu, QI Wei, LI Junda. Rail Corrugation Suppressing Method on Braking Sections of High-Speed Trains[J]. Journal of Southwest Jiaotong University, 2023, 58(3): 656-664. doi: 10.3969/j.issn.0258-2724.20220256
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To explore the influence of the braking structure/track structure on the frictional self-excited vibration of the wheelset−track−brake system on braking sections of high-speed trains, firstly, combined with on-site investigation, the finite element model of the wheelset−track−brake system of CRH3 high-speed trains is established. Then, the frictional self-excited vibration characteristics of the wheelset–track–brake system under the effects of wheel-rail stick-slip and brake roll-slip are analyzed with the complex eigenvalue method. Furthermore, the influence of the surface texture in the braking structure on the frictional self-excited vibration of the whole system is examined. The parameters of the fasteners in the track structure are parametrically analyzed. The least squares method and the particle swarm optimization algorithm are used to obtain the optimal solution of the fasteners parameters to suppress the rail corrugation. The results show that the main frequency in the frictional self-excited vibration of the wheelset–track–brake system caused by wheel-rail stick-slip and braking roll-slip is 526.75 Hz on the braking section, which is close to the characteristic frequency of the on-site corrugation. The frictional self-excited vibration of the whole system may be the main cause of rail corrugation. The rail corrugation on the braking section can be effectively suppressed by the brake pads or brake discs with surface texture, and the grooved brake pads have the best suppression effect. When the vertical stiffness of the fastener is 65.5 MN/m, the lateral stiffness is 46.0 MN/m, the vertical damping is 84.0 kN·s/m, and the lateral damping is 23.5 kN·s/m, the rail corrugation on the braking section of high-speed trains can be effectively suppressed.
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