Study on Vibration Response Characteristics of Full Superconducting Maglev Bearing Based on the Electromagnetic-heat-force Coupled Model

doi:10.3901/JME.260379

Abstract

Abstract: Superconducting magnetic levitation bearings, which have the advantages of non-contact, low energy consumption and long life, have been applied in mechanical systems such as flywheel energy storage and transport vehicles. Superconducting magnetic levitation bearings can generate magnetic field much higher than traditional magnets, resulting in more significant dynamic stability problems. It is necessary to conduct research on the influencing factors and action rules of the dynamic stability of superconducting magnetic levitation bearings. An electromagnetic, thermal and mechanical coupling numerical model of HTS magnetic suspension bearings is established, and the optimized structure to improve the background magnetic field and suspension capacity is introduced. The vibration response characteristics of fully superconducting magnetic bearings, hybrid stator magnetic bearings and magnetic bearings with optimized parameters for rotor bulks are studied. The dynamic parameters such as levitation forces-displacement relationship, temperature rise and natural frequency of the system under free vibration, harmonic and pulse excitation are analysed. The influence of external excitation on the overall stability of the system is discussed. It lays a theoretical foundation for the application of full superconducting hybrid stator maglev bearings.

Key words: superconducting maglev bearing, vibration characteristics, dynamic stability, typical external excitation

CLC Number:

TH69

LI Jing, ZENG Mingrui, ZHANG Zhibo, YU Haiyang, YANG Wenjiao, GONG Tianyong, ZHOU Pengbo, MA Guangtong. Study on Vibration Response Characteristics of Full Superconducting Maglev Bearing Based on the Electromagnetic-heat-force Coupled Model[J]. Journal of Mechanical Engineering, 2026, 62(7): 295-307.

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