Study on Modal Characteristics and Influencing Factors of Wheel-rail Coupling Vibration of High-speed Railway

被引：0
作者：
Ma C. [1 ]
Gao L. [1 ]
Zeng Q. [1 ]
Cui R. [2 ]
机构：
[1] School of Civil Engineering, Beijing Jiaotong University, Beijing
[2] Beijing MTR Construction Management Corporation, Beijing
来源：
Tiedao Xuebao/Journal of the China Railway Society | 2021年 / 43卷 / 12期
关键词：
High-speed railway; Modal; Resonance; Vehicle-track coupling dynamics; Wheel-rail coupling vibration;
D O I：
10.3969/j.issn.1001-8360.2021.12.011
中图分类号：
学科分类号：
摘要：
The wheel and the rail form a system of rigid-flexible coupling and mutual restraint. Traditional research focuses on the modal characteristics of the rail itself, lacking system modal identification. In this paper, a vehicle-ballastless track system coupling dynamic model was established to obtain the friction power and vertical force resonance characteristics. By analyzing the wheel-rail system resonance response under single/double wheelset constraints and the eigenvalues of the wheel particle-rail beam system, two types of wheel-rail coupling vibration modals with a total of four modes that induce wheel-rail system resonance were identified. One is the P2 resonance modal with the same amplitude and phase between the wheel and rail, which is easy to cause the transmission of vibration energy to the upperpart of the primary spring and the underpart of the rail. The other is the 2nd/3rd -order bending and pinned-pinned vibration modes of the rail under wheel constraints in a bogie range, which mainly leads to the transmission and reflection of the vibration between the wheels along the longitudinal direction of the rail, and makes a significant contribution to the formation of wheel polygon and rail corrugation. Finally, the factors influencing the wheel-rail coupling resonance were analyzed. The results show that the wheel-rail coupling resonance is insensitive to the fastener spacing, but is significantly affected by the fastener stiffness, and the wheelbase only affects the rail local bending resonance of the rail. © 2021, Department of Journal of the China Railway Society. All right reserved.
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页码：85 / 93
页数：8
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