Performance characteristics of gas-lubricated bump-type foil thrust bearing

Abdelrasoul M. Gad, Shigehiko Kaneko

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

In the present study, the static and dynamic characteristics of Generation II bump-type foil thrust bearings are investigated. For the static characteristics, a 2D compressible Reynolds equation containing effects of centrifugal forces is derived to model the fluid flow in the thin gas film. The compliance of the bearing is calculated using analytical structural stiffness model. The fluid flow equation is coupled to the structural stiffness model and the coupled fluid-structure interaction problem is solved iteratively to obtain the steady-state characteristics of the bearing. For the dynamic characteristics, small perturbations method is used to obtain the linearized equations for the pressure components of dynamic force coefficients. The effects of rotation speed, ramp height, nominal film thickness, friction coefficients at bump foil interfaces, and bump foil stiffness on the static and dynamic characteristics of Generation II foil thrust bearings are thoroughly analyzed.

Original languageEnglish
Pages (from-to)746-762
Number of pages17
JournalProceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology
Volume229
Issue number6
DOIs
Publication statusPublished - 2015 Jun 3
Externally publishedYes

Fingerprint

foil bearings
Foil bearings
thrust bearings
static characteristics
Thrust bearings
dynamic characteristics
stiffness
Bearings (structural)
Gases
fluid flow
foils
Stiffness
gases
Metal foil
Reynolds equation
Flow of fluids
centrifugal force
flow equations
ramps
coefficient of friction

Keywords

  • centrifugal force effect
  • elastohydrodynamic lubrication
  • Foil thrust bearing
  • generation II
  • static and dynamic characteristics

ASJC Scopus subject areas

  • Mechanical Engineering
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

Cite this

Performance characteristics of gas-lubricated bump-type foil thrust bearing. / Gad, Abdelrasoul M.; Kaneko, Shigehiko.

In: Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, Vol. 229, No. 6, 03.06.2015, p. 746-762.

Research output: Contribution to journalArticle

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