Second International Conference on Rail Transportation
Study on the Contact Vibration Characteristics of High Speed Wheel-Rail Based on MFBD
Publication: ICRT 2021
ABSTRACT
To analyze the transient micro-vibration phenomenon of wheel-rail contact surface in multi-degree of freedom during service of high-speed train, regarding wheel of S1002CN tread and rail of CN60 as the research objects, combined with finite element multi-flexible body dynamics (MFBD) technology and train-track coupling dynamics theory, a high-speed train-track spatial coupling vibration model under wheel-rail flexible-flexible (F-flex) contact mechanism was constructed. High speed wheel-rail contact vibration characteristics under the condition of variable friction coefficient and empty train are analyzed. The results show that the change of wheel-rail contact status under different influence factors will affect the lateral and vertical vibration acceleration and frequency of flexible wheel-rail in different degrees. The fluctuation of the wheel-rail vertical vibration acceleration of loaded train is greater than that of empty train, and the excitation frequency of loaded train is more than that of empty train. According to the vibration acceleration and vibration displacement of the integrated flexible rail, it can be seen that the vibration amplitude and fluctuation of the flexible rail are more obvious than that of the empty vehicle in both vertical and lateral direction.
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Acknowledgment
The project was supported by the National Natural Science Foundation of China (Grant No. 51565013), and State Key Laboratory of Traction Power, Southwest China Jiaotong University (Grant No.TPL1407) and Open Project of The Open Project of The State Key Laboratory of Heavy Duty AC Drive Electric Locomotive Systems Integration (13221430000480)
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Information & Authors
Information
Published In
ICRT 2021
Pages: 95 - 110
Editors: Wanming Zhai, Ph.D., Southwest Jiaotong University, Kelvin C. P. Wang, Ph.D., Oklahoma State University, and Shengyang Zhu, Ph.D., Southwest Jiaotong University
ISBN (Online): 978-0-7844-8388-6
Copyright
© 2022 American Society of Civil Engineers.
History
Published online: Feb 8, 2022
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