Publication result detail

Prediction of Shallow Indentation Effects in a Rolling-Sliding EHL Contact Based on Amplitude Attenuation Theory

ŠPERKA, P.; KŘUPKA, I.; HARTL, M.

Original Title

Prediction of Shallow Indentation Effects in a Rolling-Sliding EHL Contact Based on Amplitude Attenuation Theory

English Title

Prediction of Shallow Indentation Effects in a Rolling-Sliding EHL Contact Based on Amplitude Attenuation Theory

Type

WoS Article

Original Abstract

In this paper amplitude attenuation theory is used to predict film thickness variations caused by shallow indentation inside a rolling-sliding elastohydrodynamic (EHL) contact. The model providing a complete analytical description of roughness passage through the contact is considered. The estimation model is compared with film thickness measurement obtained by optical interferometry. The in-contact effects for several shapes of indentation were simulated. It is clearly shown that optimal indentation profile should have smooth shape with large diameter and small depth. The results were generally explained on theoretical curves which bring a clear insight into the transient phenomenon and can be used as a rapid engineering tool.

English abstract

In this paper amplitude attenuation theory is used to predict film thickness variations caused by shallow indentation inside a rolling-sliding elastohydrodynamic (EHL) contact. The model providing a complete analytical description of roughness passage through the contact is considered. The estimation model is compared with film thickness measurement obtained by optical interferometry. The in-contact effects for several shapes of indentation were simulated. It is clearly shown that optimal indentation profile should have smooth shape with large diameter and small depth. The results were generally explained on theoretical curves which bring a clear insight into the transient phenomenon and can be used as a rapid engineering tool.

Keywords

micro-elastohydrodynamic lubrication; surface roughness; amplitude attenuation theory; film thickness

Key words in English

micro-elastohydrodynamic lubrication; surface roughness; amplitude attenuation theory; film thickness

Authors

ŠPERKA, P.; KŘUPKA, I.; HARTL, M.

RIV year

2018

Released

15.01.2017

Publisher

Japanese Society of Tribologists

Location

Japonsko

ISBN

1881-2198

Periodical

Tribology Online

Volume

12

Number

1

State

Japan

Pages from

1

Pages to

7

Pages count

7

URL

https://www.jstage.jst.go.jp/article/trol/12/1/12_1/_pdf

BibTex

@article{BUT134784,
  author="Petr {Šperka} and Ivan {Křupka} and Martin {Hartl}",
  title="Prediction of Shallow Indentation Effects in a Rolling-Sliding EHL Contact Based on Amplitude Attenuation Theory",
  journal="Tribology Online",
  year="2017",
  volume="12",
  number="1",
  pages="1--7",
  doi="10.2474/trol12.1",
  issn="1881-2198",
  url="https://www.jstage.jst.go.jp/article/trol/12/1/12_1/_pdf"
}

Documents

sperka_tribology_online_2017