Publication detail

Effects of lateral harmonic vibrations on film thickness in EHL point contacts

FRÝZA, J. ŠPERKA, P. KŘUPKA, I. HARTL, M.

English title

Effects of lateral harmonic vibrations on film thickness in EHL point contacts

Type

WoS Article

Language

en

Original abstract

Vibrations are an integral part of machine operation and affect every elastohydrodynamically lubricated conjunctions. In the present experimental study, a rolling contact is subjected to lateral-sliding vibrations with short stroke length. Film thickness behaviour is investigated under diverse conditions including rolling speeds, stroke lengths, frequencies, loads, and variety of lubricants. The results obtained under vibrations are compared with the results for corresponding steady state conditions to determine the effects of vibrations. It is shown that the lubricant rheology and the ratio of main and lateral entrainment speed are crucial parameters where the influence of this ratio on relative film thickness and its deviations can be estimated by exponential functions uniformly for all lubricants. The thresholds for film failures were found.

Keywords in English

Elastohydrodynamic lubrication; non-steady state film thickness; micro-oscillations; lubricants

Released

2018-01-01

Publisher

Elsevier

Location

United Kingdom

ISSN

0301-679X

Journal

Tribology International

Volume

117

Number

1

Pages from–to

236–249

Pages count

14

BIBTEX


@article{BUT140070,
  author="Josef {Frýza} and Petr {Šperka} and Ivan {Křupka} and Martin {Hartl}",
  title="Effects of lateral harmonic vibrations on film thickness in EHL point contacts",
  journal="Tribology International",
  year="2018",
  volume="117",
  number="1",
  pages="236--249",
  doi="10.1016/j.triboint.2017.08.022",
  issn="0301-679X",
  url="http://www.sciencedirect.com/science/article/pii/S0301679X17304103"
}