Static and Dynamic Characteristics of Porous Journal Bearings with Anisotropic Permeability

• KANEKO Satoru

  Nagaoka University of Technology

抄録

The present study is a theoretical analysis to evaluate the static and dynamic characteristics of oil-filled porous journal bearings with anisotropic permeability. The analytical models are the porous bearings whose permeabilities are lower in one direction than in the other two directions. Considering anisotropic permeability, the Reynolds equation for the oil film is modified to include a so-called filter term and the effect of tangential velocity slip, and the pressure equation for the porous medium is obtained from Darcy's law and continuity equation. These equations are applied to the system and are numerically solved. By comparison of anisotropic types with the isotropic type in which permeability is equal to the higher one of the anisotropic types, it is found that anisotropic types have a higher load carrying capacity and a lower total side leakage flow. Furthermore, anisotropic ones have larger oil film coefficients, in which the cross-coupled term K_<xy> is larger in magnitude, and higher stability threshold speed (oneset speed of half-speed whirl).

収録刊行物

• JSME international journal. Ser. 3, Vibration, control engineering, engineering for industry

  JSME international journal. Ser. 3, Vibration, control engineering, engineering for industry 32 (1), 91-99, 1989-03-15

  一般社団法人日本機械学会

キーワード

• Lubrication theory
• Vibration of Rotating Body
• Darcy's Law
• Porous Oil Bearings
• Journal Bearings
• Anisotropic Permeability
• Static Characteristics
• Dynamic Characteristics
• Stability Threshold Speed

詳細情報

• CRID: 1573387451885508736
• NII論文ID: 110002505048
• NII書誌ID: AA10680610
• ISSN: 09148825
• 本文言語コード: en
• データソース種別:
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