Vibration reduction of a rotating machinery by magnetic damper with rotating circular magnet (nonoccurrence of an unstable vibration caused by magnetic damping force)

Yoshihisa Takayama, Atsuo Sueoka, Takahiro Kondou

研究成果: Contribution to journalArticle査読

3 被引用数 (Scopus)

抄録

The magnetic damping force is generated by not only a rotating-conductor- type magnetic damper composed of a rotating conductor and a fixed magnet but also a rotating-magnet-type magnetic damper composed of a rotating magnet and a fixed conductor. In the previous report, it was demonstrated analytically and experimentally that a rotating conductor-type magnetic damper for a rotating machine caused unstable vibrations at a rotating speed over the critical speed. In this report, the authors show that the rotation of the axisymmetric magnet on its axisymmetric axis affects the magnetic damping force very slightly by a simple experiment, and that a rotating-magnet-type magnetic damper for a rotating machine can be modeled by considering the whirling of the magnet only. As the resit, the rotating-magnct type magnetic damper never generates unstable vibrations analytically. The analytical results agree well with the experimental ones.

本文言語英語
ページ(範囲)2195-2202
ページ数8
ジャーナルNippon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C
70
8
DOI
出版ステータス出版済み - 8 2004

All Science Journal Classification (ASJC) codes

  • 材料力学
  • 機械工学
  • 産業および生産工学

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