Publication detail
Experimental study of real roughness attenuation in concentrated contacts
ŠPERKA, P. KŘUPKA, I. HARTL, M.
Czech title
Experimentální studium deformace reálných nerovností v mazaném kontaktu
English title
Experimental study of real roughness attenuation in concentrated contacts
Type
journal article - other
Language
en
Original abstract
The understanding of the processes involved in the in-contact deformation of surface roughness represents one of key factors in increasing lubrication capabilities of highly loaded machine components. Two main approaches have been developed in an effort to understand the changes of initial surface topography within highly loaded contacts to provide detailed information about lubrication film thickness and pressure distribution in the vicinity of roughness features. The first approach considers the real surface topography while the other uses the simplified topography features. Numerical solutions based on measured topography data can provide the film thickness and pressure distribution around asperities of realistic scale; nevertheless, obtained results are typically limited to the specific topography configuration measured from a very small area of rubbing surface. That is why some researchers have considered harmonic features of various wavelength and amplitudes to explain the behaviour of real roughness.
Czech abstract
Článek shrnuje výsledky studia chování reálných povrchových nerovností v nekonformních kontaktech provozovaných za podmínek elastohydrodynamického mazání.
English abstract
The understanding of the processes involved in the in-contact deformation of surface roughness represents one of key factors in increasing lubrication capabilities of highly loaded machine components. Two main approaches have been developed in an effort to understand the changes of initial surface topography within highly loaded contacts to provide detailed information about lubrication film thickness and pressure distribution in the vicinity of roughness features. The first approach considers the real surface topography while the other uses the simplified topography features. Numerical solutions based on measured topography data can provide the film thickness and pressure distribution around asperities of realistic scale; nevertheless, obtained results are typically limited to the specific topography configuration measured from a very small area of rubbing surface. That is why some researchers have considered harmonic features of various wavelength and amplitudes to explain the behaviour of real roughness.
Keywords in Czech
elastohydrodynamické mazání; tloušťka mazacího filmu; drsné povrchy
Keywords in English
elastohydrodynamic lubrication; roughness; amplitude reduction
RIV year
2009
Released
08.12.2009
Publisher
Elsevier
Location
EU
ISSN
0301-679X
Journal
Tribology International
Volume
42
Number
12
Pages from–to
1–9
Pages count
9
BIBTEX
@article{BUT46830,
author="Petr {Šperka} and Ivan {Křupka} and Martin {Hartl},
title="Experimental study of real roughness attenuation in concentrated contacts",
journal="Tribology International",
year="2009",
volume="42",
number="12",
month="December",
pages="1--9",
publisher="Elsevier",
address="EU",
issn="0301-679X"
}