Publication result detail

Effect of real longitudinal surface roughness on lubrication film formation within line elastohydrodynamic contact

SHEN, XJ.; CHEN, XY.; ŠPERKA, P.; KŘUPKA, I.; HARTL, M.

Original Title

Effect of real longitudinal surface roughness on lubrication film formation within line elastohydrodynamic contact

English Title

Effect of real longitudinal surface roughness on lubrication film formation within line elastohydrodynamic contact

Type

Peer-reviewed article not indexed in WoS or Scopus

Original Abstract

The line contact formed between a steel tapered roller and glass disc is observed within an optical test rig and the effects of real surface roughness on lubrication film formation are studied. Experiments carried out under pure rolling conditions have shown that the depth is the key parameter that influences the effect on the film thickness. If the roughness features are shallow, the lubrication film shape within the contact follows the shape of the surface closely. However, the groove having only about 800 nm in depth divided the line contact into two parts that behave as two separate line contacts. Such an effect can increase the risk of the wear of rubbing surfaces as the lubrication film thickness between the real machine components can be significantly lower than expected.

English abstract

The line contact formed between a steel tapered roller and glass disc is observed within an optical test rig and the effects of real surface roughness on lubrication film formation are studied. Experiments carried out under pure rolling conditions have shown that the depth is the key parameter that influences the effect on the film thickness. If the roughness features are shallow, the lubrication film shape within the contact follows the shape of the surface closely. However, the groove having only about 800 nm in depth divided the line contact into two parts that behave as two separate line contacts. Such an effect can increase the risk of the wear of rubbing surfaces as the lubrication film thickness between the real machine components can be significantly lower than expected.

Keywords

line contact; Film thickness; Elastohydrodynamic lubrication; Surface roughness

Key words in English

line contact; Film thickness; Elastohydrodynamic lubrication; Surface roughness

Authors

SHEN, XJ.; CHEN, XY.; ŠPERKA, P.; KŘUPKA, I.; HARTL, M.

RIV year

2011

Released

31.08.2010

Publisher

Elsevier

Location

EU

ISBN

0301-679X

Periodical

Tribology International

Volume

44

Number

3

State

United Kingdom of Great Britain and Northern Ireland

Pages from

1

Pages to

6

Pages count

6

BibTex

@article{BUT49898,
  author="SHEN, XJ. and CHEN, XY. and ŠPERKA, P. and KŘUPKA, I. and HARTL, M.",
  title="Effect of real longitudinal surface roughness on lubrication film formation within line elastohydrodynamic contact",
  journal="Tribology International",
  year="2010",
  volume="44",
  number="3",
  pages="1--6",
  issn="0301-679X"
}