Publication detail

The effect of kinematic conditions on film thickness in compliant lubricated contact

NEČAS, D. JAROŠ, T. DOČKAL, K. ŠPERKA, P. VRBKA, M. KŘUPKA, I. HARTL, M.

Original Title

The effect of kinematic conditions on film thickness in compliant lubricated contact

Type

journal article in Web of Science

Language

English

Original Abstract

The present paper deals with an investigation of film formation in compliant lubricated contact. Despite these contacts can be found in many applications of daily life including both biological and technical fields, so far little is known about the lubrication mechanisms inside the contacts. The main attention is paid to the effect of kinematic conditions on central film thickness. For this purpose, fluorescent microscopy method was employed. Experiments were realized in ball-on-disc configuration, while the ball was made from rubber and the disc was from optical glass. The contact was lubricated by glycerol and polyglycol to examine the effect of fluid viscosity. The measurements were conducted under pure rolling and rolling/sliding conditions. The entrainment speed varied from 10 to 400 mm/s and constant load of 0.2 N was applied. Experimental results were compared with two theoretical predictions derived for I-EHL regime. It was found that the thickness of lubricating film gradually increases with increasing entrainment speed, which corresponds to theoretical assumptions. Against expectations, evident influence of slide-to-roll ratio on film formation was observed. In the last part of the paper, some limitations of this study are discussed and several recommendations for further methodology improvement are suggested.

Keywords

compliant contact; isoviscous-elastohydrodynamic lubrication; film thickness; fluorescence microscopy; kinematic conditions

Authors

NEČAS, D.; JAROŠ, T.; DOČKAL, K.; ŠPERKA, P.; VRBKA, M.; KŘUPKA, I.; HARTL, M.

Released

1. 9. 2018

Publisher

The American Society of Mechanical Engineers

Location

USA

ISBN

0742-4787

Periodical

ASME Transaction, Journal of Tribology

Year of study

140

Number

5

State

United States of America

Pages from

1

Pages to

8

Pages count

8

URL

http://tribology.asmedigitalcollection.asme.org/article.aspx?articleid=2674750

BibTex

@article{BUT146445,
  author="David {Nečas} and Tomáš {Jaroš} and Kryštof {Dočkal} and Petr {Šperka} and Martin {Vrbka} and Ivan {Křupka} and Martin {Hartl}",
  title="The effect of kinematic conditions on film thickness in compliant lubricated contact",
  journal="ASME Transaction, Journal of Tribology",
  year="2018",
  volume="140",
  number="5",
  pages="1--8",
  doi="10.1115/1.4039529",
  issn="0742-4787",
  url="http://tribology.asmedigitalcollection.asme.org/article.aspx?articleid=2674750"
}