Nonlinear oscillation of an elastic body supported by high-Tc superconducting magnetic bearings

Tetsuro Iori, Shigeyuki Ogawa, Toshihiko Sugiura, Masatsugu Yoshizawa

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


This research deals with nonlinear dynamics of an elastic bar supported at both its ends by electromagnetic forces from high-Tc superconducting bulks, under vertical excitation. Experimental results show parametric resonance of an asymmetric mode consisting of pitching motion and deflection in a symmetric system. This resonance has nonlinear characteristics such as soft-spring response and hysteresis. It was also confirmed by numerical analysis. Nonlinearity originated in electromagnetic forces caused this resonance.

Original languageEnglish
Pages (from-to)2162-2165
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Issue number2
Publication statusPublished - 2007 Jun


  • Elastic body
  • Electromagnetic force
  • Magnetic bearing
  • Nonlinear oscillation
  • Parametric resonance

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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