Nonlinear Vibration of SDOF Magnetic Levitation System
Vertical vibration isolating is an intractable subject because of the conflict of large stiffness in supporting upper structure and well flexible in interdicting ground motion. In order to coordinate this contradiction, a new strategy of vibration isolating is proposed by using maglev technique, and the governing equation of single freedom magnetic levitation system is derived in this paper. The response to harmonic ground motion, free vibration, and isolation effect are studied by using numerical approach. The results indicate that the magnetic levitation system has excellent effective on isolating vertical ground motion when the frequency of the excitation grate than 3Hz and the static suspension height ranges from 6mm to 12mm. The system has well energy dissipation ability although there is no complementary damping. The most vertical vibration may be interdicted by using magnetic levitation system.
Maglev technique Levitation isolator Nonlinear vibration
Dongsheng Huang Aiping Zhou Qiang Wu
Department of Civil Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
国际会议
南京
英文
1035-1040
2007-10-16（万方平台首次上网日期，不代表论文的发表时间）