Publication result detail

Rapid Prediction of Roughness Effects in Sliding EHL Contacts

ŠPERKA, P.; KŘUPKA, I.; HARTL, M.

Original Title

Rapid Prediction of Roughness Effects in Sliding EHL Contacts

English Title

Rapid Prediction of Roughness Effects in Sliding EHL Contacts

Type

Paper in proceedings (conference paper)

Original Abstract

The surface roughness represents an important issue from many tribological aspects for several decades. Roughness features in elasohydrodynamically lubricated (EHL) contacts substantially affect minimum film thickness, pressure distribution and thus have a great influence on friction, wear and fatigue life. However, surface roughness deforms inside contact and its omission can be oversimplification of the problem. Therefore, it is important to be able predict effects connected with surface roughness to design surface pattern performance. The amplitude attenuation theory provide rapid tool to obtain roughness deformation and associated pressure fluctuations. It is based on the description of essential harmonic surface components with given amplitude and wavelength. This study further extends the model under rolling-sliding conditions with the aim present the complete and simple definition. The possibilities of the model are shown on practical case of surface indentation effects in EHL contacts. The model was compared with experiments on high pressure ball-on-disk optical tribometer.

English abstract

The surface roughness represents an important issue from many tribological aspects for several decades. Roughness features in elasohydrodynamically lubricated (EHL) contacts substantially affect minimum film thickness, pressure distribution and thus have a great influence on friction, wear and fatigue life. However, surface roughness deforms inside contact and its omission can be oversimplification of the problem. Therefore, it is important to be able predict effects connected with surface roughness to design surface pattern performance. The amplitude attenuation theory provide rapid tool to obtain roughness deformation and associated pressure fluctuations. It is based on the description of essential harmonic surface components with given amplitude and wavelength. This study further extends the model under rolling-sliding conditions with the aim present the complete and simple definition. The possibilities of the model are shown on practical case of surface indentation effects in EHL contacts. The model was compared with experiments on high pressure ball-on-disk optical tribometer.

Keywords

amplitude attenuation theory; elastic deformation

Key words in English

amplitude attenuation theory; elastic deformation

Authors

ŠPERKA, P.; KŘUPKA, I.; HARTL, M.

RIV year

2014

Released

09.05.2013

Publisher

Society of Tribologists and Lubrication Engineers

Location

Detroit

ISBN

978-1-62993-289-7

Book

Society of Tribologists & Lubrication Engineers Annual Meeting & Exhibition 2013 / Proceedings of a meeting held 5-9 May 2013, Detroit, Michigan, USA.

Pages from

180

Pages to

182

Pages count

3

URL

http://toc.proceedings.com/20040webtoc.pdf

BibTex

@inproceedings{BUT106889,
  author="Petr {Šperka} and Ivan {Křupka} and Martin {Hartl}",
  title="Rapid Prediction of Roughness Effects in Sliding EHL Contacts",
  booktitle="Society of Tribologists & Lubrication Engineers Annual Meeting & Exhibition 2013 / Proceedings of a meeting held 5-9 May 2013, Detroit, Michigan, USA.",
  year="2013",
  number="1",
  pages="180--182",
  publisher="Society of Tribologists and Lubrication Engineers",
  address="Detroit",
  isbn="978-1-62993-289-7",
  url="http://toc.proceedings.com/20040webtoc.pdf"
}