- 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: | MU Hanlin, YAN Jiahai, OUYANG Pingping, ZHANG Weihua, MA Weihua. Analysis of Influence of Boundary Conditions on Ultra-High-Speed Maglev Model Vehicle System in Low-Vacuum Pipeline[J]. Journal of Southwest Jiaotong University. doi: 10.3969/j.issn.0258-2724.20250335
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When maglev vehicles operate at an ultra-high speed, boundary conditions such as track irregularity and air resistance significantly affect the operational safety and stability of the vehicles. Based on the polymorphic coupled dynamic simulation test platform for rail transit, a dynamic model of an ultra-high-speed maglev model vehicle system was established, which considered conditions including superconducting pinning suspension and guiding force characteristics, air resistance, and track irregularity. The traction, coasting, and braking conditions achieving a maximum speed of 1,500 km/h on a 1.6 km test line were simulated. Based on the dynamic model, the vibration responses of the model vehicle system operating under different multiples of track irregularity amplitude, speeds, and limit clearances were simulated and analyzed. The results indicate that under a low-vacuum environment, when the track irregularity amplitude is 0.15 mm, and the maximum speed is 1,500 km/h, the mover exhibits a left-and-right swing vibration form during operation, and the maximum vertical displacement of the Dewar reaches 4.88 mm. As the operating speed of the model vehicle system increases, the system vibration strengthens, and the amplitudes of various dynamic indicators show an upward trend; an increase in the lateral limit clearance is beneficial to weaken the lateral vibration of the model vehicle system, while an increase in the vertical limit clearance intensifies the vertical vibration of the model vehicle system. The research results can provide a theoretical reference for the design of the ultra-high-speed maglev dynamic simulation test platform.
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