- 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: | ZHANG Rongxin, CAI Xiaopei, TANG Xueyang, WANG Yi. Alignment Design of Superconducting Electrodynamic Suspension Turnouts and Optimization of Lateral Crossing Speed[J]. Journal of Southwest Jiaotong University, 2025, 60(4): 893-903. doi: 10.3969/j.issn.0258-2724.20240421
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To improve the speed of superconducting electrodynamic suspension (EDS) trains when passing through the turnout sideways, a coupled dynamics model for the superconducting EDS train-turnout was established based on multi-body dynamics theory and differential equations of motion. By analyzing the effects of the length of different turnout beams on the vehicle dynamic response, the optimal length of turnout beams was determined, and the corresponding alignment for maglev single-open turnout was designed. The dynamics response characteristics under different lateral crossing speeds were further investigated, and the critical values of lateral crossing speeds satisfying passenger comfort and travelling safety were clarified. The results show that a shorter turnout beam and lower passing speed can expand the stabilized region of the system, reduce the fluctuation of levitation and guide gap, and improve the comfort of passengers and the smoothness of train operation. When the train passes through the turnout line with a turnout beam length of 8 m at a speed of 100 km/h, the dynamic response is optimal, satisfying the comfort of passengers. The lateral crossing speed of the turnout can be up to 130 km/h, which is 85% higher than that of the existing maximum speed of maglev trains. With the increase of the lateral crossing speed, the effect of the turnout line on the safety of maglev train operation and the comfort of passengers becomes more significant, and the vehicle dynamic response is more obvious. The critical value of the lateral safe crossing speed is 150 km/h.
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