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

T. Iori, S. Ogawa, Toshihiko Sugiura

Research output: Contribution to journalArticle

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

Fingerprint

elastic bars
Bearings (structural)
electromagnetism
elastic bodies
softening
Superconducting materials
numerical analysis
Magnets
Numerical analysis
deflection
tendencies
magnets
excitation
Experiments

Keywords

  • Nonlinear coupling
  • Primary resonance
  • Superconducting magnetic levitation

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

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