Publication result detail

Study of Scale Effect in a Starved Elastohydrodynamically Lubricated Contact

SVOBODA, P.; KOŠŤÁL, D.; KŘUPKA, I.

Original Title

Study of Scale Effect in a Starved Elastohydrodynamically Lubricated Contact

English Title

Study of Scale Effect in a Starved Elastohydrodynamically Lubricated Contact

Type

Paper in proceedings (conference paper)

Original Abstract

One of the most important parameters determining the performance and life of machine parts is a lubrication film thickness and its distribution. Current experimental and numerical studies are mostly connected with oil lubrication. However greases are used in more than 80 % of all rolling bearings where the starvation phenomenon occurs most frequently. The question is whether the results obtained from the laboratory scaled contact test device are transferable to real operating conditions of full scale bearings. The aim of this work is to compare these two approaches to measuring film thickness of different greases. The use of multiple contacts optical test rig based on thin film colorimetric interferometry for film thickness measurement has enables to obtain film thickness of starved contact and the film distribution. The experimental observation of full-scale model of bearing will help to understand better the behavior of real bearing.

English abstract

One of the most important parameters determining the performance and life of machine parts is a lubrication film thickness and its distribution. Current experimental and numerical studies are mostly connected with oil lubrication. However greases are used in more than 80 % of all rolling bearings where the starvation phenomenon occurs most frequently. The question is whether the results obtained from the laboratory scaled contact test device are transferable to real operating conditions of full scale bearings. The aim of this work is to compare these two approaches to measuring film thickness of different greases. The use of multiple contacts optical test rig based on thin film colorimetric interferometry for film thickness measurement has enables to obtain film thickness of starved contact and the film distribution. The experimental observation of full-scale model of bearing will help to understand better the behavior of real bearing.

Keywords

EHD lubrication, grease, starvation, scale effect

Key words in English

EHD lubrication, grease, starvation, scale effect

Authors

SVOBODA, P.; KOŠŤÁL, D.; KŘUPKA, I.

RIV year

2016

Released

11.05.2015

Publisher

Institute of Theoretical and Applied Mechanics

Location

Svratka

ISBN

978-80-86246-42-0

Book

ENGINEERING MECHANICS 2015 21st International Conference Engineering Mechanics 2015

Edition

1

ISBN

1805-8248

Periodical

Engineering Mechanics

State

Czech Republic

Pages from

314

Pages to

315

Pages count

2

URL

http://www.engmech.cz/im/im/

BibTex

@inproceedings{BUT114507,
  author="Petr {Svoboda} and David {Košťál} and Ivan {Křupka}",
  title="Study of Scale Effect in a Starved Elastohydrodynamically Lubricated Contact",
  booktitle="ENGINEERING MECHANICS 2015
21st International Conference Engineering Mechanics 2015",
  year="2015",
  series="1",
  journal="Engineering Mechanics",
  number="1",
  pages="314--315",
  publisher="Institute of Theoretical and Applied Mechanics",
  address="Svratka",
  isbn="978-80-86246-42-0",
  issn="1805-8248",
  url="http://www.engmech.cz/im/im/"
}