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TECHNICAL PAPERS

THD Analysis of High Speed Heavily Loaded Journal Bearings Including Thermal Deformation, Mass Conserving Cavitation, and Turbulent Effects

[+] Author and Article Information
Chao Zhang, Zixia Yi, Zhiming Zhang

Research Institute of Bearings, Shanghai University, Shanghai, 20072, P. R. China

J. Tribol 122(3), 597-602 (Nov 02, 1999) (6 pages) doi:10.1115/1.555407 History: Received January 06, 1999; Revised November 02, 1999
Copyright © 2000 by ASME
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References

Khonsari,  M. M., 1987, “A Review of Thermal Effects in Hydrodynamic Bearings: Part II—Journal Bearings,” ASLE Trans., 30, p. 26.
Pinkus, O., 1990, Thermal Aspect of Fluid-Film Tribology, ASME Press, New York.
Mittwollen,  N., and Glienicke,  J., 1990, “Operating Conditions of Multi-Lobe Journal Bearings Under High Thermal Loads,” ASME J. Tribol., 112, pp. 330–340.
Bouard,  L., Fillon,  M., and Frene,  J., 1996, “Thermohydrodynamic Analysis of Tilting-Pad Journal Bearings Operating in Turbulent Flow Regime,” ASME J. Tribol., 118, pp. 225–231.
Khonsari,  M. M., and Wang,  S. H., 1991, “On The Fluid-Solid Interaction in Reference to Thermoelastohydrodynamic Analysis of Journal Bearings,” ASME J. Tribol., 113, pp. 398–404.
Fillon,  M., Desbordes,  H., Frene,  J., and Chan Hew Wai,  C., 1996, “A Global Approach of Thermal Effects Including Pad Deformations In Tilting-Pad Journal Bearings Submitted to Unbalance Load,” ASME J. Tribol., 118, pp. 169–174.
Khonsari,  M. M., and Wang,  S. H., 1992, “Notes on Transient THD Effects in a Lubricating Film,” STLE Tribology Transaction,35, pp. 177–183.
Paranjpe,  R. S., 1996, “A Study of Dynamically Loaded Engine Bearings Using a Transient Thermohydrodynamic Analysis,” STLE Tribology Transaction,39, pp. 636–644.
Tucker,  P. G., and Keogh,  P. S., 1996, “On the Dynamic Thermal State in a Hydrodynamic Bearing With a Whirling Journal Using CFD Techniques,” ASME J. Tribol., 118, pp. 356–363.
Bouchoule,  C., Fillon,  M., Nicolas,  D., and Barresi,  F., 1996, “Experimental Study of Thermal Effects in Tilting-Pad Journal Bearings at high Operating Speeds,” ASME J. Tribol., 118, pp. 532–538.
Flack,  R. D., Kostrzewsky,  G. J., and Taylor,  D. V., 1993, “A Hydrodynamic Journal Bearing Test Rig with Dynamic Measurement Capabilities,” STLE Tribology Transaction,36, pp. 497–512.
Ma,  M. T., and Taylor,  C. M., 1996, “An Experimental Investigation of Thermal Effects in Circular and Elliptical Plain Journal Bearings,” Tribol. Int., 29, No. 1, pp. 19–26.
Fitzgerald,  M. K., and Neal,  P. B., 1992, “Temperature Distribution and Heat Transfer in Journal Bearings,” ASME J. Tribol., 114, pp. 122–130.
Ng et al.
Elrod,  H. G., 1981, “A Cavitation Algorithm,” J. Lubr. Technol. 103, No. 3, p. 350–354.
Zhang, C., and Zhang, C., 1997, “Analysis of Crankshaft Bearings in Mixed Lubrication Including Mass Conserving Cavitation,” Proc. of the 2nd International Conference on Hydrodynamic Bearing-Rotor System Dynamics, Xi’an, China, pp. 18–24.
Ezzat,  H., and Rhode,  S., 1973, “A Study of the Thermohydrodynamic Performance of Finite Slider Bearings,” J. Lubr. Technol. 95, pp. 298–307.
Richtmyer, R. D., 1957, Difference Methods for Initial Value Problems, Interscience Publishers, Inc., New York, pp. 101.
Boncompain,  R., Fillon,  M., and Frene,  J., 1986, “Analysis of Thermal Effects in Hydrodynamic Bearings,” ASME J. Tribol., 108, pp. 219–224.
Booser,  E. R., and Wilcock,  D. F., 1988, “Temperature Fade in Journal Bearing Exit Region,” ASLE Trans., 31, pp. 405–410.
Ferron,  J., Frene,  J., and Boncompain,  R., 1983, “A Study of the Thermohydrodynamic Performance of a Plain Journal Bearing Comparison Between Theory and Experiments,” ASME J. Tribol., 105, pp. 422–428.
Taylor, C. M., and Dowson, D., 1973, “Turbulent Lubrication Theory: Application to Design,” ASME Paper 73-LubS-10.

Figures

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Geometry of the modified pocket journal bearing
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Schematic view of the test rig
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Diagram showing thermocouple and pressure hole locations in the bushing and grooves (○ thermocouple; + pressure hole)
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Distribution of the film pressure, temperature in the oil-bushing interface, film and bushing temperature, and thermal deformation in the bearing mid-plane (load=70 kN for speed 6000 RPM, inlet oil temperature 40.2°C; for speed 7000 RPM, inlet oil temperature 40.5°C): (a) speed 6000 RPM; (b) speed 7000 RPM; (c) speed 6000 RPM; (d) speed 7000 RPM; (e) speed 6000 RPM, with thermal deformation; (f) speed 7000 RPM, with thermal deformation; (g) speed 6000 RPM, without thermal deformation; (h) speed 7000 RPM, without thermal deformation; (i) speed 6000 RPM; and (j) speed 7000 RPM.
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Distribution of the thermal deformation and temperature in the oil-bushing interface for different load and speed (inlet oil temperature 40.5°C): (a) load 70 kN; (b) load 90 kN; (c) load 70 kN; and (d) load 90 kN.

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