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G. Migliaccio¹, F. D'Annibale², G. Antonini³, H. Li⁴, Z. Deng⁴, W. Zhang⁴ and G. D'Ovidio²

¹, National Group for Mathematical Physics, Italia
²Department of Civil, Construction-Architectural and Environmental Engineering (DICEAA), University of L'Aquila, Italy
³Department of Industrial and Information Engineering and Economics, University of L'Aquila, Italy
⁴Research Center for Super-High-Speed Evacuated Tube Maglev Transport, Southwest Jiaotong University, Chengdu, China

doi:10.4203/ccc.15.11.15

G. Migliaccio, F. D'Annibale, G. Antonini, H. Li, Z. Deng, W. Zhang, G. D'Ovidio, "Nonlinear Dynamic Analysis of HTS maglev Train Under Guideway Disturbances", in J. Pombo, (Editor), "Proceedings of the Seventh International Conference on Railway Technology: Research, Development and Maintenance ", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 15, Paper 11.15, 2026, doi:10.4203/ccc.15.11.15

Keywords: magnetic levitation, vibration control, damping design, multiple time scales, resonances, analytical methods.

Abstract

High-temperature superconducting (HTS) magnetic levitation systems exhibit contactless levitation with strongly nonlinear force–displacement behavior and low inherent damping. This work examines the nonlinear dynamics of an HTS maglev train, with particular focus on the engineering implications of its sensitivity to guideway-induced disturbances. To support design-oriented analytical investigations, a reduced-order dynamic model is adopted that preserves the essential nonlinear characteristics of the levitation force. The Multiple Scales Method (MSM) provides analytical expressions for the system’s vertical oscillations. Based on the authors’ recent works, this framework enables an analytical evaluation of the influence of key design parameters on the system dynamics. The analysis reveals resonance conditions arising from the interaction between external disturbances and nonlinear levitation effects, which may lead to excessive vibration levels if not properly addressed at the design stage. Numerical simulations based on direct time-domain integration show good agreement with the analytical solutions over a broad range of operating conditions. Overall, the presented approach offers an efficient, design-oriented tool for parameter optimization and the mitigation of vibration-related issues in HTS maglev systems.

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Front Page Browse CCC CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Conferences ISSN 2753-3239 CCC: 15 PROCEEDINGS OF THE SEVENTH INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE Edited by: J. Pombo Paper 11.15 Nonlinear Dynamic Analysis of HTS maglev Train Under Guideway Disturbances G. Migliaccio¹, F. D'Annibale², G. Antonini³, H. Li⁴, Z. Deng⁴, W. Zhang⁴ and G. D'Ovidio² ¹, National Group for Mathematical Physics, Italia ²Department of Civil, Construction-Architectural and Environmental Engineering (DICEAA), University of L'Aquila, Italy ³Department of Industrial and Information Engineering and Economics, University of L'Aquila, Italy ⁴Research Center for Super-High-Speed Evacuated Tube Maglev Transport, Southwest Jiaotong University, Chengdu, China doi:10.4203/ccc.15.11.15 Full Bibliographic Reference for this paper G. Migliaccio, F. D'Annibale, G. Antonini, H. Li, Z. Deng, W. Zhang, G. D'Ovidio, "Nonlinear Dynamic Analysis of HTS maglev Train Under Guideway Disturbances", in J. Pombo, (Editor), "Proceedings of the Seventh International Conference on Railway Technology: Research, Development and Maintenance ", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 15, Paper 11.15, 2026, doi:10.4203/ccc.15.11.15 Keywords: magnetic levitation, vibration control, damping design, multiple time scales, resonances, analytical methods. Abstract High-temperature superconducting (HTS) magnetic levitation systems exhibit contactless levitation with strongly nonlinear force–displacement behavior and low inherent damping. This work examines the nonlinear dynamics of an HTS maglev train, with particular focus on the engineering implications of its sensitivity to guideway-induced disturbances. To support design-oriented analytical investigations, a reduced-order dynamic model is adopted that preserves the essential nonlinear characteristics of the levitation force. The Multiple Scales Method (MSM) provides analytical expressions for the system’s vertical oscillations. Based on the authors’ recent works, this framework enables an analytical evaluation of the influence of key design parameters on the system dynamics. The analysis reveals resonance conditions arising from the interaction between external disturbances and nonlinear levitation effects, which may lead to excessive vibration levels if not properly addressed at the design stage. Numerical simulations based on direct time-domain integration show good agreement with the analytical solutions over a broad range of operating conditions. Overall, the presented approach offers an efficient, design-oriented tool for parameter optimization and the mitigation of vibration-related issues in HTS maglev systems. download the full-text of this paper (PDF, 10 pages, 1143 Kb) go to the previous paper go to the next paper return to the table of contents return to the volume description
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