Detail publikačního výsledku

Analytical Formula for the Ratio of Central to Minimum Film Thickness in a Circular EHL Contact

ŠPERKA, P.; KŘUPKA, I.; HARTL, M.

Originální název

Analytical Formula for the Ratio of Central to Minimum Film Thickness in a Circular EHL Contact

Anglický název

Analytical Formula for the Ratio of Central to Minimum Film Thickness in a Circular EHL Contact

Druh

Článek WoS

Originální abstrakt

Prediction of minimum film thickness is often used in practice for calculation of film parameter to design machine operation in full film regime. It was reported several times that majority of prediction formulas cannot match experimental data in terms of minimum film thickness. These standard prediction formulas give almost constant ratio between central and minimum film thickness while numerical calculations show ratio which spans from 1 to more than 3 depending on M and L parameters. In this paper, an analytical formula of this ratio is presented for lubricants with various pressure–viscosity coefficients. The analytical formula is compared with optical interferometry measurements and differences are discussed. It allows better prediction, compared to standard formulas, of minimum film thickness for wide range of M and L parameters.

Anglický abstrakt

Prediction of minimum film thickness is often used in practice for calculation of film parameter to design machine operation in full film regime. It was reported several times that majority of prediction formulas cannot match experimental data in terms of minimum film thickness. These standard prediction formulas give almost constant ratio between central and minimum film thickness while numerical calculations show ratio which spans from 1 to more than 3 depending on M and L parameters. In this paper, an analytical formula of this ratio is presented for lubricants with various pressure–viscosity coefficients. The analytical formula is compared with optical interferometry measurements and differences are discussed. It allows better prediction, compared to standard formulas, of minimum film thickness for wide range of M and L parameters.

Klíčová slova

point contact lubrication; minimum film thickness; prediction formula

Klíčová slova v angličtině

point contact lubrication; minimum film thickness; prediction formula

Autoři

ŠPERKA, P.; KŘUPKA, I.; HARTL, M.

Rok RIV

2019

Vydáno

07.09.2018

Nakladatel

MDPI

ISSN

2075-4442

Periodikum

Lubricants

Svazek

6

Číslo

3

Stát

Švýcarská konfederace

Strany od

1

Strany do

11

Strany počet

11

URL

http://www.mdpi.com/2075-4442/6/3/80

Plný text v Digitální knihovně

http://hdl.handle.net/11012/138309

BibTex

@article{BUT150792,
  author="Petr {Šperka} and Ivan {Křupka} and Martin {Hartl}",
  title="Analytical Formula for the Ratio of Central to Minimum Film Thickness in a Circular EHL Contact",
  journal="Lubricants",
  year="2018",
  volume="6",
  number="3",
  pages="1--11",
  doi="10.3390/lubricants6030080",
  url="http://www.mdpi.com/2075-4442/6/3/80"
}

Dokumenty

lubricants-06-00080