Publication detail
Lubrication of rolling - sliding polymer contacts
KŘUPKA, J. ŠPERKA, P. KŘUPKA, I. HARTL, M.
English title
Lubrication of rolling - sliding polymer contacts
Type
conference paper
Language
en
Original abstract
The submitted article deals with polymer or hybrid contacts that are an alternative to a steel-steel contact in applications where one or both components have a low Young modulus. With respect to engineering applications such as cams or gears, a rolling-sliding ratio (SRR) between the contact surfaces is presented and the influence on film thickness is analyzed. Lubricated polymer contacts work mainly in the iso-viscous regime of the elastohydrodynamic lubrication (EHL) where a dependence of lubricant viscosity on the contact pressure is weak. The measurements were conducted on a ball-on-disc tribometer using the optical interferometry method to evaluate the distribution of film thickness. The experimentally obtained data are compared with the predictions for the soft EHL contacts and discussed. The experiments can contribute to the knowledge of the soft lubricated contacts and improvement of the design of gears made of polymer materials.
English abstract
The submitted article deals with polymer or hybrid contacts that are an alternative to a steel-steel contact in applications where one or both components have a low Young modulus. With respect to engineering applications such as cams or gears, a rolling-sliding ratio (SRR) between the contact surfaces is presented and the influence on film thickness is analyzed. Lubricated polymer contacts work mainly in the iso-viscous regime of the elastohydrodynamic lubrication (EHL) where a dependence of lubricant viscosity on the contact pressure is weak. The measurements were conducted on a ball-on-disc tribometer using the optical interferometry method to evaluate the distribution of film thickness. The experimentally obtained data are compared with the predictions for the soft EHL contacts and discussed. The experiments can contribute to the knowledge of the soft lubricated contacts and improvement of the design of gears made of polymer materials.
Keywords in English
Polymer contact; film thickness; optical interferometry; ball-on-disc tribometer; rolling-sliding ratio.
Released
13.05.2019
Publisher
Institute of Theoretical and Applied Mechanics of the Czech Academy of Sciences, Prague
Location
Prague
ISBN
978-80-87012-71-0
ISSN
1805-8256
Book
Engineering Mechanics 2019
Number
vol. 25
Pages from–to
219–222
Pages count
4
BIBTEX
@inproceedings{BUT157488,
author="Jiří {Křupka} and Petr {Šperka} and Ivan {Křupka} and Martin {Hartl},
title="Lubrication of rolling – sliding polymer contacts",
booktitle="Engineering Mechanics 2019",
year="2019",
number="vol. 25",
month="May",
pages="219--222",
publisher="Institute of Theoretical and Applied Mechanics of the Czech Academy of Sciences, Prague",
address="Prague",
isbn="978-80-87012-71-0",
issn="1805-8256"
}