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TECHNICAL PAPERS

Mixed Lubrication of Coupled Journal-Thrust-Bearing Systems Including Mass Conserving Cavitation

[+] Author and Article Information
Yansong Wang, Q. Jane Wang

Department of Mechanical Engineering, Northwestern University, Evanston, IL 60208

Chih Lin

Baker Hughes, Inc., Houston, TX 77252

J. Tribol 125(4), 747-755 (Sep 25, 2003) (9 pages) doi:10.1115/1.1574519 History: Received February 20, 2002; Revised January 21, 2003; Online September 25, 2003
Copyright © 2003 by ASME
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References

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Pander, S. S., and Pandit, M. D., 1986, “Analysis of Orifice Compensated Aerostatic Bearings for Combined Radial and Thrust Loads (Yates’ Configuration),” 12th AIMTDR Conference, IIT, Delhi, pp. 28–32.
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Nehari, Z., 1975, Conformal Mapping, Dover Publications, New York.

Figures

Grahic Jump Location
Schematic of the journal bearing and the end thrust bearing formed by shaft misalignment: (a) External boundary conditions; (b) Face wedge; and (c) Circumferential wedge.
Grahic Jump Location
Conformal mapping that transfers the thrust bearing surface into a rectangular computational domain which is connected to the journal bearing domain
Grahic Jump Location
The thrust bearing performance with different feeding conditions and different boundary conditions: (a) Contour of the pressure distribution with inner feeding and the Reynolds boundary condition; (b) Contour of the pressure distribution with outer feeding and the Reynolds boundary condition; (c) Contour of the pressure distribution with inner feeding and the cavitation consideration; (d) Contour of the pressure distribution with outer feeding the cavitation consideration; (e) Cavitation index for the outer feeding; and (f ) Cavitation index for the outer feeding.
Grahic Jump Location
Performance of the journal-thrust bearing with the Reynolds boundary conditions in hydrodynamic lubrication (ε=0.8, h̄0=0.395, misalignment angle ᾱ=0.089): (a) With coupling; and (b) Without coupling.
Grahic Jump Location
Performance of the journal-thrust bearing with the Reynolds boundary conditions in mixed lubrication (ε=0.91,h̄0=0.263, misalignment angle ᾱ=0.089): (a) Hydrodynamic pressure with coupling; (b) Hydrodynamic pressure without coupling; (c) Asperity contact pressure with coupling; and (d) Asperity contact pressure without coupling.
Grahic Jump Location
Performance of the journal-thrust bearing including mass conserving cavitation (ε=0.8, h̄0=0.395, misalignment angle ᾱ=0.089): (a) With coupling; and (b) Without coupling.
Grahic Jump Location
Performance of the journal-thrust bearing including mass conserving cavitation (ε=0.91, h̄0=0.263, misalignment angle ᾱ=0.089): (a) Hydrodynamic pressure with coupling; (b) Hydrodynamic pressure without coupling; (c) Asperity contact pressure with coupling; and (d) Asperity contact pressure without coupling.
Grahic Jump Location
Misalignment effect on the performance of coupled journal-thrust including mass conserving cavitation: (a) Load carrying capacity as a function of the misalignment angle; and (b) Load ratio as a function of the misalignment angle.

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