Applied Mathematics and Mechanics (English Edition) ›› 2019, Vol. 40 ›› Issue (7): 925-942.doi: https://doi.org/10.1007/s10483-019-2496-7

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Magnetoelastic combined resonance and stability analysis of a ferromagnetic circular plate in alternating magnetic field

Yuda HU1,2, Bingbing MA1,2   

  1. 1. School of Civil Engineering and Mechanics, Yanshan University, Qinhuangdao 066004, Hebei Province, China;
    2. Hebei Key Laboratory of Mechanical Reliability for Heavyquipment and Large Structures, Yanshan University, Qinhuangdao 066004, Hebei Province, China
  • 收稿日期:2018-10-31 修回日期:2018-12-17 出版日期:2019-07-01 发布日期:2019-07-01
  • 通讯作者: Yuda HU E-mail:huyuda03@163.com
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (No. 11472239)

Magnetoelastic combined resonance and stability analysis of a ferromagnetic circular plate in alternating magnetic field

Yuda HU1,2, Bingbing MA1,2   

  1. 1. School of Civil Engineering and Mechanics, Yanshan University, Qinhuangdao 066004, Hebei Province, China;
    2. Hebei Key Laboratory of Mechanical Reliability for Heavyquipment and Large Structures, Yanshan University, Qinhuangdao 066004, Hebei Province, China
  • Received:2018-10-31 Revised:2018-12-17 Online:2019-07-01 Published:2019-07-01
  • Contact: Yuda HU E-mail:huyuda03@163.com
  • Supported by:
    Project supported by the National Natural Science Foundation of China (No. 11472239)

摘要: The nonlinear combined resonance problem of a ferromagnetic circular plate in a transverse alternating magnetic field is investigated. On the basis of the deformation potential energy, the strain potential energy, and the kinetic energy of the circular plate, the Hamilton principle is used to induce the magnetoelastic coupling transverse vibration dynamical equation of the ferromagnetic circular plate. Based on the basic electromagnetic theory, the expressions of the magnet force and the Lorenz force of the circular plate are presented. A displacement function satisfying clamped-edge combined with the Galerkin method is used to derive the Duffing vibration differential equation of the circular plate. The amplitude-frequency response equations of the system under various combined resonance forms are obtained by means of the multi-scale method, and the stability of the steady-state solutions is analyzed according to the Lyapunov theory. Through examples, the amplitude-frequency characteristic curves with different parameters, the amplitude of resonance varying with magnetic field intensity and excitation force, and the time-course response diagram, phase diagram, Poincaré diagram of the system vibration are plotted, respectively. The effects of different parameters on the amplitude and stability of the system are discussed. The results show that the electromagnetic parameters have a significant effect on the multi-valued attribute and stability of the resonance solutions, and the system may exhibit complex nonlinear dynamical behavior including multi-period and quasi-periodic motion.

关键词: detonation wave, singular perturbation method, ratio of specific heat, combined resonance, magnetoelasticity, ferromagnetic circular plate, alternating magnetic field, multiscale method

Abstract: The nonlinear combined resonance problem of a ferromagnetic circular plate in a transverse alternating magnetic field is investigated. On the basis of the deformation potential energy, the strain potential energy, and the kinetic energy of the circular plate, the Hamilton principle is used to induce the magnetoelastic coupling transverse vibration dynamical equation of the ferromagnetic circular plate. Based on the basic electromagnetic theory, the expressions of the magnet force and the Lorenz force of the circular plate are presented. A displacement function satisfying clamped-edge combined with the Galerkin method is used to derive the Duffing vibration differential equation of the circular plate. The amplitude-frequency response equations of the system under various combined resonance forms are obtained by means of the multi-scale method, and the stability of the steady-state solutions is analyzed according to the Lyapunov theory. Through examples, the amplitude-frequency characteristic curves with different parameters, the amplitude of resonance varying with magnetic field intensity and excitation force, and the time-course response diagram, phase diagram, Poincaré diagram of the system vibration are plotted, respectively. The effects of different parameters on the amplitude and stability of the system are discussed. The results show that the electromagnetic parameters have a significant effect on the multi-valued attribute and stability of the resonance solutions, and the system may exhibit complex nonlinear dynamical behavior including multi-period and quasi-periodic motion.

Key words: detonation wave, singular perturbation method, ratio of specific heat, ferromagnetic circular plate, multiscale method, magnetoelasticity, combined resonance, alternating magnetic field

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