Publication detail
Experimental study on analytical methods for roughness deformation description in EHL contacts
ŠPERKA, P. KŘUPKA, I. HARTL, M.
Czech title
Experimentální studium analytickým metod pro popis deformace nerovností v EHD kontaktech
English title
Experimental study on analytical methods for roughness deformation description in EHL contacts
Type
conference paper
Language
en
Original abstract
The trend of decreasing of lubricant film thickness in tribological systems is one of the important features of current tribology stirred up by the quest for higher efficiency and energy saving. As a result, the influence of the surface micro geometry on the contact performance and machine component life increases steadily. This has led to a systematic effort to develop a theory that describes unifying mechanism governing the amplitude reduction of harmonic patterns in EHL contact known as amplitude attenuation principle. This theory provides formulas that can serve as a simple tool to predict the deformed geometry inside the contact for arbitrary micro geometry when used in combination with a Fourier analysis. Therefore, it is possible to give a reasonable explanation of the basic phenomena involved in real rough surface EHL and mixed lubricated contacts.
Czech abstract
Příspěvek se zabývá analytickými metodami pro popis chování povrchových nerovností v bodových kontaktech za přítomnosti maziva. V rámci studie byly provedeny měření rozložení tloušťky mazací vrstvy na optickém tribometru s použitím vzorků s modelovými nerovnostmi. Deformovaný profil podélně orientovaných nerovností byl porovnán s teoretickými modely.
English abstract
The trend of decreasing of lubricant film thickness in tribological systems is one of the important features of current tribology stirred up by the quest for higher efficiency and energy saving. As a result, the influence of the surface micro geometry on the contact performance and machine component life increases steadily. This has led to a systematic effort to develop a theory that describes unifying mechanism governing the amplitude reduction of harmonic patterns in EHL contact known as amplitude attenuation principle. This theory provides formulas that can serve as a simple tool to predict the deformed geometry inside the contact for arbitrary micro geometry when used in combination with a Fourier analysis. Therefore, it is possible to give a reasonable explanation of the basic phenomena involved in real rough surface EHL and mixed lubricated contacts.
Keywords in Czech
deformace, povrhocvé nerovnosti, analytické metody
Keywords in English
Deformation , Surface roughness , Analytical methods
RIV year
2012
Released
08.10.2012
Publisher
American Society of Mechanical Engineers
Location
Denver, CO
ISBN
978-0-7918-4508-0
Book
PROCEEDINGS OF THE ASME/STLE INTERNATIONAL JOINT TRIBOLOGY CONFERENCE, IJTC 2012
Pages from–to
123–125
Pages count
3
BIBTEX
@inproceedings{BUT104315,
author="Petr {Šperka} and Ivan {Křupka} and Martin {Hartl},
title="Experimental study on analytical methods for roughness deformation description in EHL contacts",
booktitle="PROCEEDINGS OF THE ASME/STLE INTERNATIONAL JOINT TRIBOLOGY CONFERENCE, IJTC 2012",
year="2012",
month="October",
pages="123--125",
publisher="American Society of Mechanical Engineers",
address="Denver, CO",
isbn="978-0-7918-4508-0"
}