An analysis of the classic friction modeling in lubricated contacts is conducted. Its major deficiency for soft materials (low-elastic moduli) leading to significant overstating of friction in heavily loaded isothermal and thermal lubricated contacts is revealed. An improved model of friction in a heavily loaded lubricated contact is proposed. The model is based on incorporating the tangential displacements of the solid surfaces in contact, leading to a significant reduction of the frictional stress due to the decrease of the actual sliding of lubricated surfaces. Generally, this frictional stress reduction increases with the slide-to-roll ratio, and it is extremely important for high slide-to-roll ratios for which classic approaches lead to unrealistically overestimated values of frictional stresses. The high slide-to-roll ratio values can be found in many practical applications, such as clutches. Several examples of the frictional stress calculated based on this model as well as the comparison with the classical results are given for the case of smooth solid surfaces and lubricants with Newtonian rheology. Also, the results allow to take a look at the role and the necessity of considering thermal and lubricant non-Newtonian effects on solution of various EHL problems for such heavily loaded contacts.
Skip Nav Destination
Article navigation
January 2016
Research-Article
Revision of a Fundamental Assumption in the Elastohydrodynamic Lubrication Theory and Friction in Heavily Loaded Line Contacts With Notable Sliding
Ilya I. Kudish
Ilya I. Kudish
Professor
Fellow ASME
Department of Mathematics,
Kettering University,
Flint, MI 48504
Fellow ASME
Department of Mathematics,
Kettering University,
Flint, MI 48504
Search for other works by this author on:
Ilya I. Kudish
Professor
Fellow ASME
Department of Mathematics,
Kettering University,
Flint, MI 48504
Fellow ASME
Department of Mathematics,
Kettering University,
Flint, MI 48504
Contributed by the Tribology Division of ASME for publication in the JOURNAL OF TRIBOLOGY. Manuscript received January 27, 2015; final manuscript received May 17, 2015; published online July 23, 2015. Assoc. Editor: Zhong Min Jin.
J. Tribol. Jan 2016, 138(1): 011501 (15 pages)
Published Online: July 23, 2015
Article history
Received:
January 27, 2015
Revision Received:
May 17, 2015
Citation
Kudish, I. I. (July 23, 2015). "Revision of a Fundamental Assumption in the Elastohydrodynamic Lubrication Theory and Friction in Heavily Loaded Line Contacts With Notable Sliding." ASME. J. Tribol. January 2016; 138(1): 011501. https://doi.org/10.1115/1.4030788
Download citation file:
Get Email Alerts
Cited By
Related Articles
Elastohydrodynamic Lubrication: A Gateway to Interfacial Mechanics—Review and Prospect
J. Tribol (October,2011)
Transient Elastohydrodynamic Lubrication Film Thickness During Normal Approach Considering Shear-Thinning and Linear Piezoviscous Oils
J. Tribol (April,2015)
Elastohydrodynamic Lubrication Line Contact of a Functionally Graded Material Coated Half-Plane
J. Tribol (October,2020)
Related Proceedings Papers
Related Chapters
Contact Laws
Contact in Structural Mechanics: A Weighted Residual Approach
Processing/Structure/Properties Relationships in Polymer Blends for the Development of Functional Polymer Foams
Advances in Multidisciplinary Engineering
Incremental Model Adjustment
Nonlinear Regression Modeling for Engineering Applications: Modeling, Model Validation, and Enabling Design of Experiments