Nonlinear effects of electromagnetic forces on primary resonance of a levitated elastic bar supported by high-Tc superconducting bearings

T. Iori, S. Ogawa, T. Sugiura

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

This research investigates nonlinear dynamics of an elastic body supported at both its ends by electromagnetic forces between superconductors and magnets. We focus on the primary resonance of each eigenmode under vertical excitation of superconducting bulks. Experiment and numerical analysis show the softening tendency in the resonance of the 3rd mode consisting of mainly deflection and slightly translation. This nonlinear response can be theoretically explained only by nonlinear coupling between the 1st and 3rd modes through their quadratic terms.

Original languageEnglish
Pages (from-to)1297-1301
Number of pages5
JournalPhysica C: Superconductivity and its applications
Volume463-465
Issue numberSUPPL.
DOIs
Publication statusPublished - 2007 Oct 1

Keywords

  • Nonlinear coupling
  • Primary resonance
  • Superconducting magnetic levitation

ASJC Scopus subject areas

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

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