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"
}