Publication detail
Newtonian quantitative elastohydrodynamic film thickness with linear piezoviscosity
KUMAR, P. BAIR, S. KŘUPKA, I. HARTL, M.
Czech title
Kvantitativní predikce tloušťky elastohydrodynamického mazacího filmu u maziv s lineární závislostí viskozity na tlaku
English title
Newtonian quantitative elastohydrodynamic film thickness with linear piezoviscosity
Type
journal article - other
Language
en
Original abstract
Examples are provided for linear pressure viscosity response at low pressures, which are said to exist in the concentrated contact inlet, including lubricants at high temperature, low viscosity liquids and water/glycol solutions. Full isothermal, Newtonian simulations of the EHL problem reveal film forming, which is quite similar to that of exponential liquids with the exception of the reduced sensitivity to the Dowson material parameter, G, or the Moes parameter, L. Film thickness formulas are offered, which have been experimentally validated. In a significant departure from most investigations of this kind, the viscosity of the experimental liquids was not adjusted to provide successful comparisons with measurement.
Czech abstract
Článek shrnuje výsledky studia chování maziv u kterých platí lineární závislost viskozity na tlaku. Experimenty byly realizovány na optickém tribometru a naměřené hodnoty byly porovnány s výsledky teoretického řešení vycházející s hodnot viskozity stanovených pomocí vysokotlakého viskozimetru.
English abstract
Examples are provided for linear pressure viscosity response at low pressures, which are said to exist in the concentrated contact inlet, including lubricants at high temperature, low viscosity liquids and water/glycol solutions. Full isothermal, Newtonian simulations of the EHL problem reveal film forming, which is quite similar to that of exponential liquids with the exception of the reduced sensitivity to the Dowson material parameter, G, or the Moes parameter, L. Film thickness formulas are offered, which have been experimentally validated. In a significant departure from most investigations of this kind, the viscosity of the experimental liquids was not adjusted to provide successful comparisons with measurement.
Keywords in Czech
Viskozita; EHD; tloušťka filmu; reologie; tlak
Keywords in English
Pressure viscosity behavior; EHL; Film thickness; Rheology
RIV year
2010
Released
01.11.2010
Publisher
Elsevier
Location
EU
ISSN
0301-679X
Journal
Tribology International
Volume
43
Number
11
Pages from–to
2159–2165
Pages count
7
BIBTEX
@article{BUT49897,
author="Ivan {Křupka} and Martin {Hartl},
title="Newtonian quantitative elastohydrodynamic film thickness with linear piezoviscosity",
journal="Tribology International",
year="2010",
volume="43",
number="11",
month="November",
pages="2159--2165",
publisher="Elsevier",
address="EU",
issn="0301-679X"
}