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

doi:10.1016/j.physc.2007.04.303

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

T. Iori, S. Ogawa, T. Sugiura

Department of Mechanical Engineering

Research output: Contribution to journal › Article › peer-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 language	English
Pages (from-to)	1297-1301
Number of pages	5
Journal	Physica C: Superconductivity and its applications
Volume	463-465
Issue number	SUPPL.
DOIs	https://doi.org/10.1016/j.physc.2007.04.303
Publication status	Published - 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

Access to Document

10.1016/j.physc.2007.04.303

Cite this

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