Publication result detail

Formation of micro-grooves under impact loading in elliptical contacts with surface ridges

KANETA, M.; KŘUPKA, I.; HARTL, M.; GUO, F.; WANG, J.

Original Title

Formation of micro-grooves under impact loading in elliptical contacts with surface ridges

English Title

Formation of micro-grooves under impact loading in elliptical contacts with surface ridges

Type

Peer-reviewed article not indexed in WoS or Scopus

Original Abstract

This paper is focused on the effect of impact loading on micro-deformation of asperities in elliptical elastohydrodynamic contacts. Based upon isothermal Newtonian numerical analyses, it is elucidated that a micro-groove, which appears in the ridge under impact loading in elliptical contacts, is brought about by two different mechanisms. One is the smooth surface local pressure difference across the virtual ridge and the other is the macroscopic pressure difference along the ridge. The formation of the micro-groove due to the former mechanism is influenced by the shape, size and orientation of the ridge, and the smooth surface pressure distribution depending on the initial impact gap and loading speed, and that due to the latter is markedly influenced by the loading speed.

English abstract

This paper is focused on the effect of impact loading on micro-deformation of asperities in elliptical elastohydrodynamic contacts. Based upon isothermal Newtonian numerical analyses, it is elucidated that a micro-groove, which appears in the ridge under impact loading in elliptical contacts, is brought about by two different mechanisms. One is the smooth surface local pressure difference across the virtual ridge and the other is the macroscopic pressure difference along the ridge. The formation of the micro-groove due to the former mechanism is influenced by the shape, size and orientation of the ridge, and the smooth surface pressure distribution depending on the initial impact gap and loading speed, and that due to the latter is markedly influenced by the loading speed.

Keywords

elastohydrodynamic lubrication; impact; elliptical contact; roughness

Key words in English

elastohydrodynamic lubrication; impact; elliptical contact; roughness

Authors

KANETA, M.; KŘUPKA, I.; HARTL, M.; GUO, F.; WANG, J.

RIV year

2014

Released

19.02.2013

Publisher

Elsevier

Location

EU

ISBN

0301-679X

Periodical

Tribology International

Volume

65

Number

9

State

United Kingdom of Great Britain and Northern Ireland

Pages from

336

Pages to

345

Pages count

10

BibTex

@article{BUT103165,
  author="KANETA, M. and KŘUPKA, I. and HARTL, M. and GUO, F. and WANG, J.",
  title="Formation of micro-grooves under impact loading in elliptical contacts with surface ridges",
  journal="Tribology International",
  year="2013",
  volume="65",
  number="9",
  pages="336--345",
  issn="0301-679X"
}