Publication detail

Numerical evaluation of pressure from experimentally measured film thickness in EHL point contact

VAVERKA, M. VRBKA, M. POLIŠČUK, R. KŘUPKA, I. HARTL, M.

Czech title

Numerický výpočet tlaku z experimentálně naměřené tloušťky mazacího filmu v EHD bodovém kontaktu

English title

Numerical evaluation of pressure from experimentally measured film thickness in EHL point contact

Type

journal article - other

Language

en

Original abstract

This paper is concerned with elastohydrodynamic lubrication, especially the determination of lubricant film thickness and contact pressure within a point contact of friction surfaces of machine parts. A new solution technique for numerical determination of contact pressure is introduced. The direct measurement of contact pressure is very difficult. Hence, input data of lubricant film thickness obtained from the experiment based on colorimetric interferometry are used for the calculation of pressure using the inverse elasticity theory. The algorithm is enhanced by convolution in order to increase calculation speed. The approach described in this contribution gives reliable results on smooth contact and in the future, it will be extended to enable the study of contact of friction surfaces with asperities.

Czech abstract

Článek představuje numerický výpočet kontaktního tlaku z experimentálně naměřené tloušťky mazacího filmu pomocí interferometie v elastohydrodynamicky mazaném bodovém kontaktu.

English abstract

This paper is concerned with elastohydrodynamic lubrication, especially the determination of lubricant film thickness and contact pressure within a point contact of friction surfaces of machine parts. A new solution technique for numerical determination of contact pressure is introduced. The direct measurement of contact pressure is very difficult. Hence, input data of lubricant film thickness obtained from the experiment based on colorimetric interferometry are used for the calculation of pressure using the inverse elasticity theory. The algorithm is enhanced by convolution in order to increase calculation speed. The approach described in this contribution gives reliable results on smooth contact and in the future, it will be extended to enable the study of contact of friction surfaces with asperities.

Keywords in Czech

EHL, elastohydrodynamic lubrication, film thickness , contact pressure, colorimetric interferometry, convolution, inverse elasticity theory

Keywords in English

EHL, elastohydrodynamic lubrication, film thickness , contact pressure, colorimetric interferometry, convolution, inverse elasticity theory

RIV year

2008

Released

01.01.2008

Publisher

John Wiley & Sons, Ltd.

Location

GB

ISSN

0954-0075

Journal

Lubrication Science

Volume

20

Number

1

Pages from–to

47–59

Pages count

13

BIBTEX


@article{BUT44134,
  author="Michal {Vaverka} and Martin {Vrbka} and Radek {Poliščuk} and Ivan {Křupka} and Martin {Hartl},
  title="Numerical evaluation of pressure from experimentally measured film thickness in EHL point contact",
  journal="Lubrication Science",
  year="2008",
  volume="20",
  number="1",
  month="January",
  pages="47--59",
  publisher="John Wiley & Sons, Ltd.",
  address="GB",
  issn="0954-0075"
}