Dynamic Modeling and Coupled Vibration Analysis of Middle-Low Speed Maglev Vehicle-Bridge-Controller System
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In order to explore the middle-speed adaptability of the rail beams including 25 m Changsha maglev simply-supported girder, the finite element dynamic analysis models for maglev rail beams was established firstly based on the finite element theory, of which the self-oscillation characteristics are analyzed. The dynamic model of middle-speed maglev train with 120 degrees of freedom is set up based on multi-body dynamics theory. Then the maglev train-bridge-controller coupled model is established considering the PID active suspension control as levitation force. Based on the vehicle-bridge-controller coupled model, the vibration responses of the vehicle-bridge system are further studied at middle speed with track beams which are taken as the structure under the rail. The simulation speed ranges from 100 km/h to 180 km/h. Then the vertical vibration responses of bridge and car body are calculated and analyzed.
KeywordsMiddle-low speed maglev system Coupled dynamic modeling Vibration responses
This work was supported by the Sichuan Science and Technology Program (Grant No. 2018GZ0056) and National Key Research and Development Program of China (Grant No. 2016YFB1200600).
- 1.Wu, X.M.: Maglev Train. Shanghai Scientific and Technical Publishers, Shanghai (2003)Google Scholar
- 3.Li, X.Z., Hong, Q.Y., Geng, J., et al.: The medium and low speed maglev train-track beam coupling vibration model and vibration. J. Railway Eng. Soc. (9), 103–108 (2015) Google Scholar
- 4.Zhao, C.F.: Maglev vehicle system dynamics. Doctoral dissertation, Southwest Jiaotong University (2002)Google Scholar
- 5.Jiang, W.L., Gao, M.M.: Study of the effect of track beam parameters on vertical coupled dynamic response of maglev vehicle-viaduct. China Railway Sci. 25(3), 71–75 (2004)Google Scholar