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Abstract

In this paper, a one-dimensional beam element model on elastic foundations is used to study the static and dynamic performances of a gas-lubricated multileaf foil journal bearing. The two-dimensional Reynolds equation is solved by using the finite element method coupled with the elastic deformation equation simultaneously for the converged steady state. Subsequently, a perturbation method is used to calculate the dynamic characteristics including stiffness and damping coefficients. The effects of structural and operating parameters, such as bump stiffness, leaf foil thickness, attitude angle, bearing number, and eccentricity ratio are discussed in detail. The results show that the parameters greatly influence the bearing performance, which is helpful information for designing and manufacturing an experimental prototype.

Keywords

Foil journal bearing elastohydrodynamic static performance dynamic characteristics perturbation method

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References

Gray S, Heshmat H and Bhushan B. Technology progress on compliant foil air bearing systems for commercial applications. In: Proceedings of the 8th international gas bearing symposium, BHRA Fluid Engineering, Cranfield, Bedford, UK, April 1981, paper no. 6, pp.70–97.

Reddi

Chu

. Finite element solution of the steady-state compressible lubrication problem. ASME J Lubric Technol 1970; 92: 495–503.

Carpino M and Peng JP. Theoretical performance of foil journal bearings. In: AIAA/SAE/ASME /ASEE 27^th joint propulsion conference, Sacramento, CA, 24–26 June 1991, paper no. AIAA-91-2105.

Peng

Khonsari

. Hydrodynamic analysis of compliant foil bearings with compressible air flow. ASME J Tribol 2004; 126(3): 542–546.

Le Lez

Arghir

Frene

. Static and dynamic characterization of a bump-type foil bearing structure. ASME J Tribol 2007; 129(1): 7–83.

Lee

Kim

. The static performance analysis of foil journal bearings considering three-dimensional shape of the foil structure. ASME J Tribol 2008; 130(3):

Hou

Cheng

. Numerical study on foil journal bearings with protuberant foil structure. Tribol Int 2011; 44(9): 1061–1070.

Bensouilah

Lahmar

Bou-Saïd

. Elasto-aerodynamic lubrication analysis of a self-acting air foil journal bearing. Lubric Sci 2012; 24(3): 9–128.

Koepsel WF. Gas lubricated foil bearing development for advanced turbomachines. Report, Garrett Corporation, Phoenix, Arizona, USA, 1976.

10.

Agrawal GL. Foil air/gas bearing technology – an overview. ASME paper 97-GT-347, 1997.

11.

Marley DJ. Self-acting foil bearings. Patent 3382014-ZH, USA, 1968.

12.

Marley DJ. Foil thrust bearing arrangements. Patent 3375046-ZH, USA, 1968.

13.

Heuer DF and Collins RA. Dynamic and environmental evaluation of compliant foil gas lubricated bearings. Report, Air Force Aero Propulsion Laboratory, United States Air Force, USA, 1973.

14.

Rohde

. A theoretical investigation of the multileaf journal bearing. J Appl Mech-T ASME 1976; 43: 237–242.

15.

Rohde

. A theoretical analysis of a compliant shell air bearing. ASME J Lubric Technol 1977; 99: 75–75.

16.

Arakere

Nelson

. An analysis of gas-lubricated foil journal bearings. Tribol Trans 1992; 35(1): 1–10.

17.

Sudheer Kumar Reddy

Swarnamani

Prabhu

. Analysis of aerodynamic multileaf foil journal bearings. Wear 1997; 209(1): 115–122.

18.

Hu LG, Zhang GH, Liu ZS, et al. Performance analysis of multi-leaf oil lubricated foil bearing. Proc IMechE, Part J: J Engineering Tribology 2013; 227(9): 962--979.

19.

Liu

Zhang

. Design and experiment of oil lubricated five-leaf foil bearing test-bed. ASME J Eng Gas Turbines Power 2009; 131(5):

20.

Heshmat

. An analysis of gas-lubricated, multileaf foil journal bearings with backing springs. ASME J Tribol 1995; 117(3): 437–443.

21.

Arakere

. Analysis of foil journal bearings with backing springs. Tribol Trans 1996; 39(1): 208–214.

22.

Roger Ku

Heshmat

. Compliant foil bearing structural stiffness analysis. I: Theoretical model including strip and variable bump foil geometry. Discussion. ASME J Tribol 1992; 114(2): 394–400.

23.

Rubio

San Andrés

. Bump-type foil bearing structural stiffness: experiments and predictions. ASME J Eng Gas Turbines Power 2006; 128(3): 653–660.

24.

Heshmat

Walowit

Pinkus

. Analysis of gas-lubricated foil journal bearings. ASME J Lubric Technol 1983; 105: 638–646.

Hydrodynamic analysis of multileaf gas foil bearing with backing springs

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