Detail publikace

Abnormal lubricant aggregation on roughness features in a rolling–sliding elastohydrodynamic contact

ŠPERKA, P. OMASTA, M. KŘUPKA, I. HARTL, M.

Originální název

Abnormal lubricant aggregation on roughness features in a rolling–sliding elastohydrodynamic contact

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

Any practical surface has some roughness which tends to decrease film thickness in concentrated contacts and increase the risk of surface failures. Surface roughness is deformed but roughness also influences the lubrication process. Therefore, it is important to understand these constrains, to predict a real performance of rough surfaces. It was already reported that roughness tends to flatten inside the contact under rolling–sliding conditions. However, this paper presents experiments showing an abnormal effect inside point contact when the additional lubricant is aggregated on the roughness feature (ridge). Enhanced roughness deformation has a protecting function against direct asperities contacts. The relationship to lubricant speed changes inside the contact, a role of thermal effect and possibility of phase transitions are discussed.

Klíčová slova

Elastohydrodynamic lubrication, surface roughness, roughness effects, amplitude attenuation theory, film thickness, pressure variations, lubricant rheology, in-contact conditions

Autoři

ŠPERKA, P.; OMASTA, M.; KŘUPKA, I.; HARTL, M.

Vydáno

29. 2. 2016

Nakladatel

Elsevier

Místo

Anglie

ISSN

0301-679X

Periodikum

Tribology International

Ročník

94

Číslo

1

Stát

Spojené království Velké Británie a Severního Irska

Strany od

346

Strany do

351

Strany počet

6

URL

http://www.sciencedirect.com/science/article/pii/S0301679X15004430

BibTex

@article{BUT134834,
  author="Petr {Šperka} and Milan {Omasta} and Ivan {Křupka} and Martin {Hartl}",
  title="Abnormal lubricant aggregation on roughness features in a rolling–sliding elastohydrodynamic contact",
  journal="Tribology International",
  year="2016",
  volume="94",
  number="1",
  pages="346--351",
  doi="10.1016/j.triboint.2015.09.041",
  issn="0301-679X",
  url="http://www.sciencedirect.com/science/article/pii/S0301679X15004430"
}