Publication detail
The Effect of Load (Pressure) for Quantitative EHL Film Thickness
KŘUPKA, I. HARTL, M. BAIR, S. KUMAR, P. KHONSARI, M.M.
Czech title
Vliv tlaku (zatížení) na tloušťku EHD mazacího filmu
English title
The Effect of Load (Pressure) for Quantitative EHL Film Thickness
Type
journal article - other
Language
en
Original abstract
New quantitative numerical simulations of the elastohydrodynamic lubrication (EHL) film thickness using realistic pressure and shear-dependent rheology and realistic compressibility have indicated that the dependence of central film thickness upon Hertz pressure (or load) for the classic Newtonian, slightly compressible solution is merely a lower limit with magnitudes three times as great being possible. Experimental measurements of central film thickness employing Hertz pressures from 1.0 to 2.6 GPa confirm that for a neat mineral oil, the classical pressure dependence is accurate, while for two gear oils the experimental pressure dependence is much larger.
Czech abstract
Článek shrnuje výsledky experimentálního ověření vlivu tlaku (zatížení) na tloušťku elastohydrodynamického mazacího filmu při použití newtonských i nenewtonských maziv.
English abstract
New quantitative numerical simulations of the elastohydrodynamic lubrication (EHL) film thickness using realistic pressure and shear-dependent rheology and realistic compressibility have indicated that the dependence of central film thickness upon Hertz pressure (or load) for the classic Newtonian, slightly compressible solution is merely a lower limit with magnitudes three times as great being possible. Experimental measurements of central film thickness employing Hertz pressures from 1.0 to 2.6 GPa confirm that for a neat mineral oil, the classical pressure dependence is accurate, while for two gear oils the experimental pressure dependence is much larger.
Keywords in Czech
Elastohydrodynamické mazání; Tloušťka filmu; Reologie; Stlačitelnost
Keywords in English
Elastohydrodynamic; Film thickness; EHL; Rheology; Compressibility
RIV year
2009
Released
19.12.2009
Publisher
Springer
ISSN
1023-8883
Journal
Tribology Letters
Volume
34
Number
X
Pages from–to
1–10
Pages count
10
BIBTEX
@article{BUT47124,
author="Ivan {Křupka} and Martin {Hartl},
title="The Effect of Load (Pressure) for Quantitative EHL Film Thickness",
journal="Tribology Letters",
year="2009",
volume="34",
number="X",
month="December",
pages="1--10",
publisher="Springer",
issn="1023-8883"
}