Measurement of Dynamic Properties of O-rings and Stability Threshold of Flexibly Supported Herringbone Grooved Aerodynamic Journal Bearings

• Tomioka Jun

  Faculty of Science and Engineering, Waseda University

• Miyanaga Norifumi

  Graduate School of Waseda University

抄録

The purpose of this paper is to measure the non-linear dynamic properties of O-rings in wide frequency ranges including in the ultra-high-speed rotational regions and to calculate the stability threshold of herringbone grooved aerodynamic journal bearings with O-rings support. First, the Voigt model was used as a rheological model of the O-rings, and the spring and the damping coefficients were evaluated in a wide frequency range from 0.5 to 4 kHz. Then, the stability threshold of the herringbone grooved aerodynamic journal bearings supported by O-rings was calculated. In this calculation, the compressible Reynolds equation based on the Narrow Groove Theory was solved by the perturbation method. Finally, the theoretical results were compared with the experimental results. The calculated results had a good agreement with the experimental ones

収録刊行物

• Tribology Online

  Tribology Online 3 (7), 366-369, 2008

  一般社団法人 日本トライボロジー学会

キーワード

• flexible elements
• herringbone bearing
• frequency dependence
• stability threshold
• O-rings

詳細情報

• CRID: 1390282680245927168
• NII論文ID: 130000453666
• DOI: 10.2474/trol.3.366
• ISSN: 18812198
• ISSN: 1881218X
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可