Effect of support stiffness and damping on stability characteristics of herringbone-grooved aerodynamic journal bearings mounted on viscoelastic supports

Norifumi Miyanaga*, Jun Tomioka

*この研究の対応する著者

研究成果: Article査読

16 被引用数 (Scopus)

抄録

Journal bearings mounted on viscoelastic supports are often used to improve the stability. However, proper support conditions have not been established especially for herringbone-grooved aerodynamic journal bearings. This study aims to make clear the effect of support stiffness and damping on the stability characteristics of the bearings. For that purpose, the linear perturbation analysis and the nonlinear transient analysis are performed for various viscoelastic support conditions. This investigation reveals that the groove configuration that gives the highest threshold speed of whirl instability changes with the viscoelastic support conditions. This investigation also reveals that it is possible to stabilize the bearings by viscoelastic supports. However, the threshold speed for lower damping support conditions decreases rather than that for rigid support condition.

本文言語English
ページ(範囲)195-203
ページ数9
ジャーナルTribology International
100
DOI
出版ステータスPublished - 2016 8 1

ASJC Scopus subject areas

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

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