Publication result detail

Experimental Study of Roughness Effect in a Rolling–Sliding EHL Contact. Part I: Roughness Deformation

ŠPERKA, P.; KŘUPKA, I.; HARTL, M.

Original Title

Experimental Study of Roughness Effect in a Rolling–Sliding EHL Contact. Part I: Roughness Deformation

English Title

Experimental Study of Roughness Effect in a Rolling–Sliding EHL Contact. Part I: Roughness Deformation

Type

WoS Article

Original Abstract

This article presents experimental results of artificial roughness behavior inside elastohydrodynamic contacts. An optical tribometer with a high-speed camera was used to measure the film thickness distribution inside the contact. The results are compared to the amplitude attenuation theory including a description of harmonic components modification. Part I of the article deals with roughness deformation. The effects of central film thickness and slide-to-roll ratio on the roughness feature deformation were investigated for two lubricants. It was found that roughness is independent of sliding magnitude and position inside a highly loaded zone. The results showed a good correlation with Hooke's approximate amplitude attenuation model. However, it reaches a limiting deformation under thin film conditions. Part II of the article deals with complementary effect connected with surface roughness under rolling–sliding conditions.

English abstract

This article presents experimental results of artificial roughness behavior inside elastohydrodynamic contacts. An optical tribometer with a high-speed camera was used to measure the film thickness distribution inside the contact. The results are compared to the amplitude attenuation theory including a description of harmonic components modification. Part I of the article deals with roughness deformation. The effects of central film thickness and slide-to-roll ratio on the roughness feature deformation were investigated for two lubricants. It was found that roughness is independent of sliding magnitude and position inside a highly loaded zone. The results showed a good correlation with Hooke's approximate amplitude attenuation model. However, it reaches a limiting deformation under thin film conditions. Part II of the article deals with complementary effect connected with surface roughness under rolling–sliding conditions.

Keywords

elastohydrodynamic lubrication, surface roughness, roughness effects, amplitude attenuation theory, film thickness, pressure variations, lubricant rheology, in-contact conditions

Key words in English

elastohydrodynamic lubrication, surface roughness, roughness effects, amplitude attenuation theory, film thickness, pressure variations, lubricant rheology, in-contact conditions

Authors

ŠPERKA, P.; KŘUPKA, I.; HARTL, M.

RIV year

2017

Released

03.03.2016

Publisher

Taylor & Francis Inc

ISBN

1040-2004

Periodical

TRIBOLOGY TRANSACTIONS

Volume

59

Number

2

State

United States of America

Pages from

267

Pages to

276

Pages count

10

URL

http://www.tandfonline.com/doi/full/10.1080/10402004.2015.1070940

BibTex

@article{BUT134836,
  author="Petr {Šperka} and Ivan {Křupka} and Martin {Hartl}",
  title="Experimental Study of Roughness Effect in a Rolling–Sliding EHL Contact. Part I: Roughness Deformation",
  journal="TRIBOLOGY TRANSACTIONS",
  year="2016",
  volume="59",
  number="2",
  pages="267--276",
  doi="10.1080/10402004.2015.1070940",
  issn="1040-2004",
  url="http://www.tandfonline.com/doi/full/10.1080/10402004.2015.1070940"
}

Documents

Roughness paper