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"
}