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Quantifying the Rheological Basis of Traction Fluid Performance
Technical Paper
1999-01-3610
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
This paper proposes a new approach to quantifying the rheological effects that come into play in traction fluids under different regimes of operation in elastohydrodynamic (EHD) contacts. We take account of shear thinning and viscoelasticity and of the joint temperature and pressure dependence of these effects and show how the resulting model conforms with measured traction coefficients for a typical traction fluid. Understanding the bulk rheology of traction fluids in detail is seen as an aid to designing more effective fluids and predicting performance in real engineering systems. Moreover, the form of the constitutive model used is consistent with molecular dynamics simulation studies, as described in the companion paper[1]. Thus, a fairly complete quantitative picture of traction fluid behaviour from the molecular level through to performance in a macroscopic contact is emerging.
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Citation
Scales, L., "Quantifying the Rheological Basis of Traction Fluid Performance," SAE Technical Paper 1999-01-3610, 1999, https://doi.org/10.4271/1999-01-3610.Also In
References
- Chynoweth, S. The molecular basis of the rheological behaviour of lubricants SAE Fall Fuels and Lubricants Conference Toronto 1999
- White J.L. Metzner A.B. Development of constitutive equations for polymeric melts and solutions J. Appl. Polym. Sci. 7 1963 1867 1889
- Phillips T.N. Need R.E. Davies A.R. Williamson B.P. Scales L.E. The effect of viscoelasticity on the performance of dynamically loaded journal bearings SAE International Fuels and Lubricants Meeting San Francisco, California, USA October 1998
- Lin J.F. Lin T.R. Jang J.Y. Elastohydrodynamic lubrication of line contacts with a non-Newtonian lubricant Tribology International 22 1989 335 342
- Kim K.H. Sadeghi F. Thermal non-Newtonian elastohydrodynamic lubrication of rolling line contacts Trans ASME J. Tribology 113 1991 703 709
- Salehizadeh H. Saka N. Non-Newtonian elastohydrodynamic lubrication of point contacts Trans ASME J. Tribology 113 1991 481 491
- Khonsari M.M. Hua D.Y. Generalised non- Newtonian elastohydrodynamic lubrication Tribology International 26 1993 405 411
- Johnson K.L. Tevaarwerk J.L. Shear behaviour of elastohydrodynamic oil films Proc. R. Soc. London, Ser. A 356 1977 215 236
- Tichy J.A. Non-Newtonian lubrication with the convected Maxwell model STLE/ASME Tribology Conference Orlando 1995
- Binding D.M. Couch M.A. Walters K. The pressure dependence of the shear and elongational properties of polymer melts J. Non-Newtonian Fluid Mech. 79 1998 137 155
- Binding D.M. Couch M.A. Walters K. The rheology of multigrade oils at elevated pressures
- Myllerup C.M. Elsharkawy A.A. Hamrock B.J. Couette dominance used for non-Newtonian elastohydrodynamic lubrication STLE/ASME Tribology Conference New Orleans 1992
- Cross M.M. Rheology of non-Newtonian fluids: A new flow equation for pseudoplastic systems J. Colloid Sci. 20 1965 417
- Barnes H.A. Hutton J.F. Walters K. An introduction to rheology Elsevier 1989
- Chynoweth S. Coy R.C. Michopoulos Y. Scales L.E. Simulated lubricant behaviour under elastohydrodynamic conditions Proceedings of the International Tribology Conference Yokohama 2 1995 663 668
- Chynoweth S. Coy R.C. Holmes A.J. Scales L.E. Simulated lubricant non-Newtonian behaviour under elastohydrodynamic conditions Proceedings of the 23rd Leeds/Lyon Symposium on Tribology Leeds September 1996
- Roelands C.J.A. Correlational aspects of the viscosity-temperature-pressure relationship of lubricating oils Technische Hogeschool Delft, Netherlands 1966
- Rouse P.E. Jr. A theory of the linear viscoelastic properties of dilute solutions of coiling polymers J. Chem. Phys. 21 1953 1272 1280
- Dowson D. Higginson G.R. Elastohydrodynamic lubrication Pergamon Press 1977
- Küss E. Deymann H. The viscosity-pressure behaviour of some traction fluids 27 1980 95 97
- Johnson K.L. Private communication 1989