Publication detail
Influence of thermal conductivity of contact bodies on perturbed film caused by a ridge and groove in point EHL contacts
KANETA, M. CUI, J. L. YANG, P. R. KŘUPKA, I. HARTL, M.
English title
Influence of thermal conductivity of contact bodies on perturbed film caused by a ridge and groove in point EHL contacts
Type
journal article in Web of Science
Language
en
Original abstract
The effects of a transverse ridge and groove in ceramics (Si3N4 and ZrO2) and steel circular contacts on the film thickness, pressure and temperature are discussed through transient non-Newtonian thermal EHL analyzes. The appearance time and the moving velocity of a perturbed film generated by a surface irregularity are mainly affected by the sign of slid-roll ratio, which relates directly to the thermal viscosity wedge effect, and the surface where the irregularity exists. The moving velocity of the perturbed film does not necessarily corresponds to the entrainment velocity. The perturbed film produced by the groove brings about a higher pressure at the ridge position depending on the relative position between the groove and the ridge. (C) 2015 Elsevier Ltd. All rights reserved.
English abstract
The effects of a transverse ridge and groove in ceramics (Si3N4 and ZrO2) and steel circular contacts on the film thickness, pressure and temperature are discussed through transient non-Newtonian thermal EHL analyzes. The appearance time and the moving velocity of a perturbed film generated by a surface irregularity are mainly affected by the sign of slid-roll ratio, which relates directly to the thermal viscosity wedge effect, and the surface where the irregularity exists. The moving velocity of the perturbed film does not necessarily corresponds to the entrainment velocity. The perturbed film produced by the groove brings about a higher pressure at the ridge position depending on the relative position between the groove and the ridge. (C) 2015 Elsevier Ltd. All rights reserved.
Keywords in English
Thermal elastohydrodynamic lubrication; Ceramic-steel contacts; Thermal viscosity wedge effect; Perturbed film
Released
07.08.2017
Publisher
ELSEVIER
Location
OXFORD, GB
ISSN
0301-679X
Volume
100
Number
1
Pages from–to
84–98
Pages count
15
BIBTEX
@article{BUT143482,
author="Motohiro {Kaneta} and Petr {Svoboda} and Ivan {Křupka} and Martin {Hartl},
title="Influence of thermal conductivity of contact bodies on perturbed film caused by a ridge and groove in point EHL contacts",
year="2017",
volume="100",
number="1",
month="August",
pages="84--98",
publisher="ELSEVIER",
address="OXFORD, GB",
issn="0301-679X"
}