Linear and nonlinear stability analysis of hydrodynamic journal bearings using mass-conservative cavitation model

Norifumi Miyanaga*, Jun Tomioka

*この研究の対応する著者

研究成果査読

2 被引用数 (Scopus)

抄録

The stability of journal bearings is analyzed by the perturbation method, clarifying a treatment of a time derivative term of the lubricant density ratio in the Reynolds-like equation based on the mass-conservative cavitation model. The stability map by the perturbation analysis is verified with the nonlinear transient analysis. In ε<0.1, the stability by the mass-conservative cavitation model was always unstable. In 0.1≦ε, the model gave the higher stability boundary than the non-mass-conservative half-Sommerfeld model. The choice of the cavitation pressure was significant in the bearing stability at lower eccentricity.

本文言語English
ページ(範囲)61-73
ページ数13
ジャーナルJurnal Tribologi
22
出版ステータスPublished - 2019 9

ASJC Scopus subject areas

  • 機械工学
  • 材料力学
  • 材料化学
  • 表面、皮膜および薄膜
  • 表面および界面

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