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Non-Newtonian fluid model incorporated into elastohydrodynamic lubrication of rectangular contactsA procedure is outlined for the numerical solution of the complete elastohydrodynamic lubrication of rectangular contacts incorporating a non-Newtonian fluid model. The approach uses a Newtonian model as long as the shear stress is less than a limiting shear stress. If the shear stress exceeds the limiting value, the shear stress is set equal to the limiting value. The numerical solution requires the coupled solution of the pressure, film shape, and fluid rheology equations from the inlet to the outlet. Isothermal and no-side-leakage assumptions were imposed in the analysis. The influence of dimensionless speed, load, materials, and sliding velocity and limiting-shear-strength proportionality constant on dimensionless minimum film thickness was investigated. Fourteen cases were used in obtaining the minimum-film-thickness equation for an elastohydrodynamically lubricated rectangular contact incorporating a non-Newtonian fluid model. Computer plots are also presented that indicate in detail pressure distribution, film shape, shear stress at the surfaces, and flow throughout the conjunction.
Document ID
19840061513
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Jacobson, B. O.
(Lulea Hogskolan, Lulea, Sweden)
Hamrock, B. J.
(NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
August 12, 2013
Publication Date
April 1, 1984
Publication Information
Publication: ASME, Transactions, Journal of Tribology
Volume: 106
ISSN: 0022-2305
Subject Category
Mechanical Engineering
Report/Patent Number
ASME PAPER 83-LUB-15
Accession Number
84A44300
Distribution Limits
Public
Copyright
Other

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