Publication detail
Effects of Loading Process and Contact Shape on Point Impact Elastohydrodynamics
KANETA, M. KŘUPKA, I. HARTL, M.
Czech title
Vliv procesu zatěžování a tvaru kontaktu na elastohydrodynamický kontakt
English title
Effects of Loading Process and Contact Shape on Point Impact Elastohydrodynamics
Type
journal article - other
Language
en
Original abstract
The squeeze effect is an important subject in studies of elastohydrodynamic lubrication (EHL). By impact loading, the oil between point contact surfaces is entrapped at the central region or the peripheral region depending on the initial conditions. The effects of the loading process, surface roughness, and ellipticity ratio of contacts on the film thickness and pressure distributions are not fully understood yet. In the current study, those effects are elucidated through numerical analyses by specified initial impact gaps, which produce the central or the peripheral oil entrapments. The loading process, which can produce rather low pressure, has been proposed. Moreover, conditions, under which a microdimple is produced in the central circular bump are clarified.
Czech abstract
Článek shrnuje výsledky numerického studia vlivu povrchových nerovností na utváření mazacího filmu při normálovém přiblížení třecích těles. Je ukázán vliv procesu zatěžování a tvaru kontaktu na rozložení tlaku v mazacím filmu a průběh jeho utváření v závislosti na počátečním přiblížení těles.
English abstract
The squeeze effect is an important subject in studies of elastohydrodynamic lubrication (EHL). By impact loading, the oil between point contact surfaces is entrapped at the central region or the peripheral region depending on the initial conditions. The effects of the loading process, surface roughness, and ellipticity ratio of contacts on the film thickness and pressure distributions are not fully understood yet. In the current study, those effects are elucidated through numerical analyses by specified initial impact gaps, which produce the central or the peripheral oil entrapments. The loading process, which can produce rather low pressure, has been proposed. Moreover, conditions, under which a microdimple is produced in the central circular bump are clarified.
Keywords in Czech
elastohydrodynamický film; rázové zatížení; mikrovýstupek; povrchové nerovnosti
Keywords in English
elastohydrodynamics; impact load; microdimple; surface asperity
RIV year
2012
Released
16.11.2012
Publisher
Taylor & Francis
Location
USA
ISSN
1040-2004
Volume
55
Number
6
Pages from–to
772–781
Pages count
10
BIBTEX
@article{BUT96706,
author="Motohiro {Kaneta} and Ivan {Křupka} and Martin {Hartl},
title="Effects of Loading Process and Contact Shape on Point Impact Elastohydrodynamics",
year="2012",
volume="55",
number="6",
month="November",
pages="772--781",
publisher="Taylor & Francis",
address="USA",
issn="1040-2004"
}