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"
}