Publication detail

Pressure Increase in Elliptical Impact Elastohydrodynamic Lubrication Contacts With Longitudinal Asperities

KANETA, M. KŘUPKA, I. HARTL, M.

Original Title

Pressure Increase in Elliptical Impact Elastohydrodynamic Lubrication Contacts With Longitudinal Asperities

Type

journal article - other

Language

English

Original Abstract

The phenomena that occur when an elliptical steel body impacts a stationary steel plate with surface asperities are discussed through isothermal Newtonian numerical analysis using sinusoidal roughness. The ridges of the surface asperities produce large local pressures, especially at a large ellipticity ratio, when the surfaces are approaching each other under the applied load. The values of the local pressures are larger when the ridges are along the major axis than when the ridges are along the minor axis. Furthermore, as the loading speed increases, the pressure increases. As a result, the microgrooves are produced in the ridges and the horseshoe-shaped constrictions are formed at the ridges located around the contact edge.

Keywords

elastohydrodynamics; impact load; microgroove; surface asperity; loading speed

Authors

KANETA, M.; KŘUPKA, I.; HARTL, M.

RIV year

2012

Released

21. 12. 2012

Publisher

ASME

Location

USA

ISBN

0742-4787

Periodical

ASME Transaction, Journal of Tribology

Year of study

135

Number

1

State

United States of America

Pages from

1

Pages to

6

Pages count

6

BibTex

@article{BUT96705,
  author="Motohiro {Kaneta} and Ivan {Křupka} and Martin {Hartl}",
  title="Pressure Increase in Elliptical Impact Elastohydrodynamic Lubrication Contacts With Longitudinal Asperities",
  journal="ASME Transaction, Journal of Tribology",
  year="2012",
  volume="135",
  number="1",
  pages="1--6",
  issn="0742-4787"
}