Detail publikace

Experimental observation of elastohydrodynamically lubricated contacts replenishment

KOŠŤÁL, D. ŠPERKA, P. SVOBODA, P. KŘUPKA, I. HARTL, M.

Originální název

Experimental observation of elastohydrodynamically lubricated contacts replenishment

Typ

článek v časopise ve Scopus, Jsc

Jazyk

angličtina

Originální abstrakt

Starved regime of elastohydrodynamic lubrication (EHL) is usually described by smaller thicknesses of the lubrication film then fully flooded regime. This state can be caused by a number of reasons including operating conditions, lubricant supply or/and its properties. Rolling bearings contain multiple consequent elements which can increase the risk of starvation because the replenishment mechanisms are not able to recover lubricant film after each element passage. One of the main aspects in the rolling bearings is proximity of the rolling elements. Severity of the starvation increases as the mutual elements distance decreases. Lubricant which was squeezed out by rolling element need some time to replenish the gap. This paper presents experimental methods for measuring the time necessary for oil lubricant film recovery. Results obtained by these methods had been compared with existing theory. The theory describes behavior of replenishment of the central film thickness and change in the lubricant distribution across the rolling track. Both of these aspects qualitatively agree. Changes in the central film thickness during replenishment process were theoretically described as very nonlinear process which was confirmed by experiment in this paper.

Klíčová slova

EHL, starvation, rolling bearings, replenishment

Autoři

KOŠŤÁL, D.; ŠPERKA, P.; SVOBODA, P.; KŘUPKA, I.; HARTL, M.

Rok RIV

2015

Vydáno

1. 10. 2015

Místo

Praha

ISSN

1805-0476

Periodikum

MM Science Journal

Číslo

2015/3

Stát

Česká republika

Strany od

640

Strany do

644

Strany počet

5

URL

http://www.mmscience.eu/content/file/MM_Science_201525.pdf

BibTex

@article{BUT117369,
  author="David {Košťál} and Petr {Šperka} and Petr {Svoboda} and Ivan {Křupka} and Martin {Hartl}",
  title="Experimental observation of elastohydrodynamically lubricated contacts replenishment",
  journal="MM Science Journal",
  year="2015",
  number="2015/3",
  pages="640--644",
  doi="10.17973/MMSJ.2015\{_}10\{_}201525",
  issn="1805-0476",
  url="http://www.mmscience.eu/content/file/MM_Science_201525.pdf"
}