Contacts of indentors with functionally graded elastic solids may produce pressures significantly different from the results obtained for homogeneous elastic materials (Hertzian results). It is even more so for heavily loaded line elastohydrodynamically lubricated (EHL) contacts. The goal of the paper is to indicate two distinct ways the functionally graded elastic materials may alter the classic results for the heavily loaded line EHL contacts. Namely, besides pressure the other two main characteristics which are influenced by the nonuniformity of the elastic properties of the contact materials are lubrication film thickness and frictional stress/friction force produced by lubricant flow. The approach used for analyzing the influence of functionally graded elastic materials on parameters of heavily loaded line EHL contacts is based on the asymptotic methods earlier developed by authors (Kudish, 2013, Elastohydrodynamic Lubrication for Line and Point Contacts: Asymptotic and Numerical Approaches, Chapman & Hall/CRC Press, New York; Kudish and Covitch, 2010, Modeling and Analytical Methods in Tribology, Chapman & Hall/CRC Press, New York; and Aizikovich et al., 2006, Contact Problems of Elasticity for Functionally Graded Materials, Fizmatlit, Moscow, Russia). More specifically, it is based on the analysis of contact problems for dry contacts of functionally graded elastic solids and the lubrication mechanisms in the inlet and exit zones as well as in the central region of heavily lubricated contacts.
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April 2016
Research-Article
Some Criteria for Coating Effectiveness in Heavily Loaded Line Elastohydrodynamically Lubricated Contacts—Part I: Dry Contacts
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
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Sergey S. Volkov,
Sergey S. Volkov
Laboratory of Functionally Graded and
Composite Materials,
Research and Education Center “Materials,”
Don State Technical University,
Rostov-on-Don 344000, Russia
Composite Materials,
Research and Education Center “Materials,”
Don State Technical University,
Rostov-on-Don 344000, Russia
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Andrey S. Vasiliev,
Andrey S. Vasiliev
Laboratory of Functionally Graded and
Composite Materials,
Research and Education Center “Materials,”
Don State Technical University,
Rostov-on-Don 344000, Russia
Composite Materials,
Research and Education Center “Materials,”
Don State Technical University,
Rostov-on-Don 344000, Russia
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Sergey M. Aizikovich
Sergey M. Aizikovich
Laboratory of Functionally Graded and
Composite Materials,
Research and Education Center “Materials,”
Don State Technical University,
Rostov-on-Don 344000, Russia
Composite Materials,
Research and Education Center “Materials,”
Don State Technical University,
Rostov-on-Don 344000, Russia
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
Sergey S. Volkov
Laboratory of Functionally Graded and
Composite Materials,
Research and Education Center “Materials,”
Don State Technical University,
Rostov-on-Don 344000, Russia
Composite Materials,
Research and Education Center “Materials,”
Don State Technical University,
Rostov-on-Don 344000, Russia
Andrey S. Vasiliev
Laboratory of Functionally Graded and
Composite Materials,
Research and Education Center “Materials,”
Don State Technical University,
Rostov-on-Don 344000, Russia
Composite Materials,
Research and Education Center “Materials,”
Don State Technical University,
Rostov-on-Don 344000, Russia
Sergey M. Aizikovich
Laboratory of Functionally Graded and
Composite Materials,
Research and Education Center “Materials,”
Don State Technical University,
Rostov-on-Don 344000, Russia
Composite Materials,
Research and Education Center “Materials,”
Don State Technical University,
Rostov-on-Don 344000, Russia
Contributed by the Tribology Division of ASME for publication in the JOURNAL OF TRIBOLOGY. Manuscript received January 26, 2015; final manuscript received June 18, 2015; published online October 30, 2015. Assoc. Editor: Dong Zhu.
J. Tribol. Apr 2016, 138(2): 021504 (10 pages)
Published Online: October 30, 2015
Article history
Received:
January 26, 2015
Revision Received:
June 18, 2015
Connected Content
A companion article has been published:
Some Criteria for Coating Effectiveness in Heavily Loaded Line Elastohydrodynamically Lubricated Contacts—Part II: Lubricated Contacts
Citation
Kudish, I. I., Volkov, S. S., Vasiliev, A. S., and Aizikovich, S. M. (October 30, 2015). "Some Criteria for Coating Effectiveness in Heavily Loaded Line Elastohydrodynamically Lubricated Contacts—Part I: Dry Contacts." ASME. J. Tribol. April 2016; 138(2): 021504. https://doi.org/10.1115/1.4030956
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