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TECHNICAL PAPERS

Transient Non-Newtonian Thermohydrodynamic Mixed Lubrication of Dynamically Loaded Journal Bearings

[+] Author and Article Information
Chao Zhang, H. S. Cheng

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

J. Tribol 122(1), 156-161 (May 11, 1999) (6 pages) doi:10.1115/1.555338 History: Received February 05, 1999; Revised May 11, 1999
Copyright © 2000 by ASME
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References

Rastogi,  A., and Gupta,  R. K., 1991, “Accounting for Lubricant Shear Thinning in the Design of Short Journal Bearings,” J. Rheol., 35, pp. 589–603.
Boedo, S., and Booker, J. F., 1995, “Body Force and Roughness Effects in Mass-Conserving Model Based Elastohydrodynamic Lubrication Model,” Proc. of the International Tribology Conference, Yokohama, pp. 1061–1066.
Ai,  Xiaolan, Cheng,  H. S., Hua,  Dongyun, Moteki,  K., and Aoyama,  S., 1998, “A Finite Analysis of Dynamically Loaded Journal Bearings in Mixed Lubrication,” STLE Tribol. Trans., 44, No. 2, pp. 273–281.
Paranjpe,  R. S., and Han,  T. Y., 1995, “A Transient Thermohydrodynamic Analysis Including Mass Conserving Cavitation for Dynamically Loaded Journal Bearings,” ASME J. Tribol., 117, pp. 369–378.
Wang, X., Wen, S., and Gui, C., 1998, “An Analysis of the Thermohydrodynamic Performance of Dynamically Loaded Bearings,” Proc. of The First Asia International Conference on Tribology, Beijing, 1998, pp. 25–29.
Zhang, C., Jiang, J. X., and Cheng, H. S., 1998, “A Transient Thermo-Hydrodynamic Analysis of Dynamically Loaded Finite Journal Bearings with Rough Surface Including Mass Conserving Cavitation,” presented at the 25th Leeds-Lyon Symposium on Tribology, Sept. 1998 and to appear in the Proc. of the 25th Leeds-Lyon Symposium on Tribology.
Zhang, C., Jiang, J. X., and Cheng, H. S., 1999, “A Study of Dynamically Loaded Finite Journal Bearings in Mixed Lubrication Using a Transient Thermohydrodynamic Analysis,” submitted to the 54th STLE Annual Meeting, Las Vegas, May 23–27, 1999, and accepted for publication in STLE Tribology Transactions.
Rastogi,  A., and Gupta,  R. K., 1990, “Lubricant Elasticity and the Performance of Dynamically Loaded Short Journal Bearings,” J. Rheol., 34, pp. 1337–1356.
Paranjpe,  R. S., 1992, “Analysis of Non-Newtonian Effects in Dynamically Loaded Finite Journal Bearings Including Mass Conserving Cavitation,” ASME J. Tribol., 114, pp. 736–746.
Zhang, C., Zhang, Z., and Qiu, Z., 1998, “Analysis of Mixed Lubrication of Dynamically Loaded Journal Bearings Including Non-Newtonian Effects and Mass Conserving Cavitation,” Proc. of the 24th Leeds-Lyon Symposium on Tribology, Sept. 1997, pp. 175–186.
Christensen,  H., 1969–1970, “Stochastic Models for Hydro-dynamic Lubrication of Rough Surfaces,” Proc. Inst. Mech. Eng., 184, Part 1, No. 55, pp. 1013–1026.
Dowson,  D., 1962, “A Generalized Reynolds Equation for Fluid Film Lubrication,” Int. J. Mech. Sci., 4, pp. 159–170.
Ezzat,  H., and Rhode,  S., 1973, “A Study of the Thermohydrodynamic Performance of Finite Slider Bearings,” ASME J. Lubr. Technol., 95, pp. 298–307.
Lee,  S. C., and Ren,  N., 1996, “Behavior of Elastic-Plastic Rough Surface Contacts as Affected by the Surface Topography, Load and Materials,” STLE Tribol. Trans., 39, pp. 67–74.
Richtmyer, R. D., 1957, Difference Methods for Initial Value Problems, Inter-Science Publishers, New York, p. 101.

Figures

Grahic Jump Location
Journal bearing configuration
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Flow chart of the numerical calculation
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Effects of roughness texture, shear thinning, and viscoelasticity on bearing characteristics versus the time for direct problem
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Effects of shear thinning on oil temperature in oil-bushing interface versus the time for the transverse roughness and direct problem (κ=0). (a) n=1. (b) n=0.95. (c) n=0.9.
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Effects of roughness texture and viscoelasticity on bearing characteristics vs. the time for inverse problem (n=0.95,κ=500 μs)
Grahic Jump Location
Effects of roughness texture on film temperature in oil-bushing interface vs. the time for inverse problem (n=0.95,κ=500 μs). (a) Smooth surface. (b) Transverse roughness.

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