5726 ディスクとシュラウドとの隙間の不均一さによる回転円板のモード形状の変化(S84-3 情報機器コンピュータメカニクス(3),S84 情報機器コンピュータメカニクス)

• 江口 健彦

  日立中央研

書誌事項

タイトル別名

• 5726 Modification of mode shapes of rotating disk by non-uniform gap between disk and shroud

抄録

Experiments on disk flutter of hard disk drives with non-uniform gap between disks and a shroud were conducted. In this experiments, polyester tapes were partly attached on the shroud so that the shroud gap was changed along the circumference of the disks. Three non-axisymmetric normal modes of the disk were measured, and these amplitude had extremal values at the circumferential position where the shroud gap was narrowest. These vibration modes should not appear if the shroud gap is uniform. Numerical simulation with non-uniform shroud gap was performed, and normal modes of a rotating disk were computed. The mode shapes of these normal modes well matched those of the measured vibration modes. Therefore, it is thought that mode amplitude at a specified point can be decreased by aerodynamic damping force.

収録刊行物

• 年次大会講演論文集

  年次大会講演論文集 2006.5 (0), 651-652, 2006

  一般社団法人 日本機械学会

キーワード

• Flutter
• Damping
• Flow Induced Vibration
• Vibration of Rotating Body
• Magnetic Disk Drive

詳細情報

• CRID: 1390282681038984320
• NII論文ID: 110006635725
• DOI: 10.1299/jsmemecjo.2006.5.0_651
• ISSN: 24331325
• Web Site: https://www.jstage.jst.go.jp/article/jsmemecjo/2006.5/0/2006.5_651/_pdf
• 本文言語コード: ja
• データソース種別:
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  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可