Publication detail

Influence of Surface Dents on Elastohydrodynamic and Mixed Lubrication

VAVERKA, M. ZAPLETAL, L. ŠAMÁNEK, O. VRBKA, M.

Original Title

Influence of Surface Dents on Elastohydrodynamic and Mixed Lubrication

Type

conference paper

Language

English

Original Abstract

Machine parts with non-conformal contact surfaces frequently operate in elastohydrodynamic or mixed regime of lubrication. In surroundings of asperities significant changes in lubricant film thickness and also contact pressure occur, which can lead to failure. The article deals with the influence of surface dents on film thickness, contact pressure and rolling contact fatigue. These quantities are important for machine design in terms of failure (pitting and scuffing). Lubricant film thickness is measured by thin film colorimetric interferometry (TCFI) and contact pressure is calculated using inverse elasticity theory enhanced by convolution algorithms. Rolling contact fatigue tests show that it is possible to design surface textures of suitable layout of microdents which can have positive effect on lubrication and rolling contact fatigue life.

Keywords

Elastohydrodynamic lubrication, EHL, surfaces, roughness, contact pressure, asperities, dents, contact fatigue

Authors

VAVERKA, M.; ZAPLETAL, L.; ŠAMÁNEK, O.; VRBKA, M.

RIV year

2011

Released

9. 5. 2011

Publisher

IT ASCR

Location

Brno

ISBN

978-80-87012-33-8

Book

Engineering Mechanics 2011

Edition

17th international Conference

Edition number

1

Pages from

643

Pages to

646

Pages count

4

BibTex

@inproceedings{BUT36667,
  author="Michal {Vaverka} and Lukáš {Zapletal} and Otakar {Šamánek} and Martin {Vrbka}",
  title="Influence of Surface Dents on Elastohydrodynamic and Mixed Lubrication",
  booktitle="Engineering Mechanics 2011",
  year="2011",
  series="17th international Conference",
  number="1",
  pages="643--646",
  publisher="IT ASCR",
  address="Brno",
  isbn="978-80-87012-33-8"
}