Detail publikace
Effects of lubricant rheology and impact speed on EHL film thickness at pure squeeze action
FRÝZA, J. ŠPERKA, P. KANETA, M. KŘUPKA, I. HARTL, M.
Anglický název
Effects of lubricant rheology and impact speed on EHL film thickness at pure squeeze action
Typ
článek v časopise ve Web of Science, Jimp
Jazyk
en
Originální abstrakt
A squeeze film action is an essential phenomenon in elastohydrodynamically lubricated conjunctions subjected to impact loading or sudden halting of motion and affects both film thickness and friction. This study presents experimental results of film thickness behaviour of lubricant entrapment under diverse conditions including initial impact gaps, initial approaching speeds, loading speeds and variety of lubricants during introductory part of impact loading. The results are compared with recent theoretical solution. It is shown that the entrapped film shape directly depends on loading speed and the central film thickness is mainly determined by the approaching speed and lubricant viscosity and can be approximated by power law where the influence of impact times/speeds can be estimated from basic rheological properties of lubricants.
Anglický abstrakt
A squeeze film action is an essential phenomenon in elastohydrodynamically lubricated conjunctions subjected to impact loading or sudden halting of motion and affects both film thickness and friction. This study presents experimental results of film thickness behaviour of lubricant entrapment under diverse conditions including initial impact gaps, initial approaching speeds, loading speeds and variety of lubricants during introductory part of impact loading. The results are compared with recent theoretical solution. It is shown that the entrapped film shape directly depends on loading speed and the central film thickness is mainly determined by the approaching speed and lubricant viscosity and can be approximated by power law where the influence of impact times/speeds can be estimated from basic rheological properties of lubricants.
Klíčová slova anglicky
Elastohydrodynamic lubrication; Non-steady state film thickness; Squeeze action; Lubricants
Vydáno
15.10.2016
Nakladatel
Elsevier
ISSN
0301-679X
Ročník
106
Číslo
2
Strany od–do
1–9
Počet stran
9
BIBTEX
@article{BUT129364,
author="Josef {Frýza} and Petr {Šperka} and Motohiro {Kaneta} and Ivan {Křupka} and Martin {Hartl},
title="Effects of lubricant rheology and impact speed on EHL film thickness at pure squeeze action",
year="2016",
volume="106",
number="2",
month="October",
pages="1--9",
publisher="Elsevier",
issn="0301-679X"
}