The behavior of roughness features under rolling–sliding inside highly loaded elastohydrodynamically lubricated (EHL) contacts is studied in detail for many years now. In particular, the roughness deformation was subject to different theoretical analyses as well as experiments. A recent experimental work developed by Šperka et al. (2016, “Experimental Study of Roughness Effects in a Rolling–Sliding EHL Contact—Part I: Roughness Deformation,” Tribol. Trans., 59(2), pp. 267–276) studied the effect of kinematic operating conditions (mean velocity and slide to roll ratio) on the deformed profile of a ridge. The current paper presents results of full numerical simulations and their direct comparison to experiments in order to study the dependency of roughness deformation on the operating conditions. The assumption of non-Newtonian lubricant behavior seems to have a significant influence on the results as well. Results indicate that, in agreement with experiments, the variation of mean velocity causes changes in the deformed profiles of roughness while, on the other hand, the magnitude of slide to roll ratio (for sliding larger than ±50%) does not have influence on the size of the deformation.
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Effect of Kinematic Operating Conditions on Ridge Deformation—Numerical Study With Experimental Comparison
Ildikó Ficza,
Ildikó Ficza
Assistant Professor
Faculty of Mechanical Engineering,
Brno University of Technology,
Technicka 2896/2,
Brno 616 69, Czech Republic
e-mail: ficza@fme.vutbr.cz
Faculty of Mechanical Engineering,
Brno University of Technology,
Technicka 2896/2,
Brno 616 69, Czech Republic
e-mail: ficza@fme.vutbr.cz
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Petr Šperka,
Petr Šperka
Assistant Professor
Faculty of Mechanical Engineering,
Brno University of Technology,
Technicka 2896/2,
Brno 616 69, Czech Republic
e-mail: sperka@fme.vutbr.cz
Faculty of Mechanical Engineering,
Brno University of Technology,
Technicka 2896/2,
Brno 616 69, Czech Republic
e-mail: sperka@fme.vutbr.cz
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Ivan Křupka,
Ivan Křupka
Professor
Faculty of Mechanical Engineering,
Brno University of Technology,
Technicka 2896/2,
Brno 616 69, Czech Republic
e-mail: krupka@fme.vutbr.cz
Faculty of Mechanical Engineering,
Brno University of Technology,
Technicka 2896/2,
Brno 616 69, Czech Republic
e-mail: krupka@fme.vutbr.cz
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Martin Hartl
Martin Hartl
Professor
Faculty of Mechanical Engineering,
Brno University of Technology,
Technicka 2896/2,
Brno 616 69, Czech Republic
e-mail: hartl@fme.vutbr.cz
Faculty of Mechanical Engineering,
Brno University of Technology,
Technicka 2896/2,
Brno 616 69, Czech Republic
e-mail: hartl@fme.vutbr.cz
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Ildikó Ficza
Assistant Professor
Faculty of Mechanical Engineering,
Brno University of Technology,
Technicka 2896/2,
Brno 616 69, Czech Republic
e-mail: ficza@fme.vutbr.cz
Faculty of Mechanical Engineering,
Brno University of Technology,
Technicka 2896/2,
Brno 616 69, Czech Republic
e-mail: ficza@fme.vutbr.cz
Petr Šperka
Assistant Professor
Faculty of Mechanical Engineering,
Brno University of Technology,
Technicka 2896/2,
Brno 616 69, Czech Republic
e-mail: sperka@fme.vutbr.cz
Faculty of Mechanical Engineering,
Brno University of Technology,
Technicka 2896/2,
Brno 616 69, Czech Republic
e-mail: sperka@fme.vutbr.cz
Ivan Křupka
Professor
Faculty of Mechanical Engineering,
Brno University of Technology,
Technicka 2896/2,
Brno 616 69, Czech Republic
e-mail: krupka@fme.vutbr.cz
Faculty of Mechanical Engineering,
Brno University of Technology,
Technicka 2896/2,
Brno 616 69, Czech Republic
e-mail: krupka@fme.vutbr.cz
Martin Hartl
Professor
Faculty of Mechanical Engineering,
Brno University of Technology,
Technicka 2896/2,
Brno 616 69, Czech Republic
e-mail: hartl@fme.vutbr.cz
Faculty of Mechanical Engineering,
Brno University of Technology,
Technicka 2896/2,
Brno 616 69, Czech Republic
e-mail: hartl@fme.vutbr.cz
1Corresponding author.
Contributed by the Tribology Division of ASME for publication in the JOURNAL OF TRIBOLOGY. Manuscript received November 10, 2015; final manuscript received August 23, 2016; published online November 30, 2016. Assoc. Editor: Ning Ren.
J. Tribol. May 2017, 139(3): 031502 (9 pages)
Published Online: November 30, 2016
Article history
Received:
November 10, 2015
Revised:
August 23, 2016
Citation
Ficza, I., Šperka, P., Křupka, I., and Hartl, M. (November 30, 2016). "Effect of Kinematic Operating Conditions on Ridge Deformation—Numerical Study With Experimental Comparison." ASME. J. Tribol. May 2017; 139(3): 031502. https://doi.org/10.1115/1.4034764
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