Publication detail
Influence of Surface Texturing on Lubricant Film Formation and Surface Fatigue
ŠAMÁNEK, O. ZIMMERMAN, M. SVOBODA, P. KŘUPKA, I. VRBKA, M.
Czech title
Vliv topografie třecích povrchů na tvorbu mazacího filmu a únavový život
English title
Influence of Surface Texturing on Lubricant Film Formation and Surface Fatigue
Type
journal article - other
Language
en
Original abstract
This paper concerns a study of the lubricant film formation and behavior of a point contact under non-steady state conditions. Transient Elastohydrodynamic (EHD) lubrication, where operating parameters such as speed and load vary over time, occurs in many machine elements including cams, gears and roller bearings. Therefore, an attention in last few years was focused on behavior and formation of a lubricant film in Elastohydrodynamic lubricated (EHL) contact under non-steady state conditions. The critical running sequences of EHL contacts include e.g. starting or halting of contact surfaces and also abrupt increases or decreases of surface speed and load. These cases can cause a rupture of a lubricant film and in consequence of this action also damage of contact surfaces. This study is devoted to the experimental research of the behavior of EHD films during reversal of entrainment in reciprocating motion. Moreover influence of surface texturing on rolling contact fatigue life of rubbing surfaces was also studied.
Czech abstract
Článek popisuje proces chování a utváření mazacího filmu v bodovém kontaktu, za nestacionárních provozních podmínek. V reálných aplikacích se operační parametry, jakými jsou rychlost a zatížení, mění v čase. Proto je vhodné se zabývat i chováním mazacího filmu v kontaktu za těchto podmínek. Provozní podmínky mohou představovat například kritické fáze provozu, jakými jsou rozběh, doběh či reverzace třecích povrchů, nebo například náhlé zastavení či zatížení kontaktních ploch. Tyto případy mohou vést k protržení mazacího filmu a dále až k poškození třecího povrchu. Článek se zaměřuje na experimentální posouzení chování EHD mazacího filmu při reverzaci třecích povrchů. Dále je studován vliv cílené modifikace topografie na kontaktní únavovou životnost třecího povrchu.
English abstract
This paper concerns a study of the lubricant film formation and behavior of a point contact under non-steady state conditions. Transient Elastohydrodynamic (EHD) lubrication, where operating parameters such as speed and load vary over time, occurs in many machine elements including cams, gears and roller bearings. Therefore, an attention in last few years was focused on behavior and formation of a lubricant film in Elastohydrodynamic lubricated (EHL) contact under non-steady state conditions. The critical running sequences of EHL contacts include e.g. starting or halting of contact surfaces and also abrupt increases or decreases of surface speed and load. These cases can cause a rupture of a lubricant film and in consequence of this action also damage of contact surfaces. This study is devoted to the experimental research of the behavior of EHD films during reversal of entrainment in reciprocating motion. Moreover influence of surface texturing on rolling contact fatigue life of rubbing surfaces was also studied.
Keywords in Czech
smíšené mazání, tloušťka filmu, topografie třecích povrchů, reverzace pohybu, nestacionární provozní podmínky, únavový život
Keywords in English
mixed lubrication, film thickness, surface texturing, reversal of motion, non-steady state conditions, rolling contact fatigue
RIV year
2010
Released
31.05.2010
Publisher
Association for Engineering Mechanics
Location
Engineering Mechanics, Technická 2, 616 69 Brno
ISSN
1802-1484
Journal
Engineering Mechanics
Volume
17
Number
1
Pages from–to
27–36
Pages count
10
BIBTEX
@article{BUT49088,
author="Otakar {Šamánek} and Martin {Zimmerman} and Petr {Svoboda} and Ivan {Křupka} and Martin {Vrbka},
title="Influence of Surface Texturing on Lubricant Film Formation and Surface Fatigue",
journal="Engineering Mechanics",
year="2010",
volume="17",
number="1",
month="May",
pages="27--36",
publisher="Association for Engineering Mechanics",
address="Engineering Mechanics, Technická 2, 616 69 Brno",
issn="1802-1484"
}