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 language | English |
|---|---|
| Pages (from-to) | 746-762 |
| Number of pages | 17 |
| Journal | Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology |
| Volume | 229 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 2015 Jun 3 |
| Externally published | Yes |
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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 journal › Article
}
TY - JOUR
T1 - Performance characteristics of gas-lubricated bump-type foil thrust bearing
AU - Gad, Abdelrasoul M.
AU - Kaneko, Shigehiko
PY - 2015/6/3
Y1 - 2015/6/3
N2 - 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.
AB - 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.
KW - centrifugal force effect
KW - elastohydrodynamic lubrication
KW - Foil thrust bearing
KW - generation II
KW - static and dynamic characteristics
UR - http://www.scopus.com/inward/record.url?scp=84930405826&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84930405826&partnerID=8YFLogxK
U2 - 10.1177/1350650114564709
DO - 10.1177/1350650114564709
M3 - Article
AN - SCOPUS:84930405826
VL - 229
SP - 746
EP - 762
JO - Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology
JF - Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology
SN - 1350-6501
IS - 6
ER -