Detail publikačního výsledku

Film thickness interrelationship of base oil and grease lubricated compliant and hard non-conformal contacts

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

Originální název

Film thickness interrelationship of base oil and grease lubricated compliant and hard non-conformal contacts

Anglický název

Film thickness interrelationship of base oil and grease lubricated compliant and hard non-conformal contacts

Druh

Článek WoS

Originální abstrakt

The interfaces of plastic components are often operated as self-lubricating or lubricated with greases close to the piezoviscous-elastic lubrication regime. However, current basic tribological knowledge about grease-lubricated compliant contacts is still very limited. This experimental study provides insight into relations between film thicknesses of grease and its base oil in compliant polymethylmethacrylate-steel and stiff glass-steel point contacts at different speeds and loads. The results are compared with predictions. The ratio between grease and its base oil film thickness was found to be significantly influenced by the interplay of load and the non-Newtonian response of grease, especially for the compliant contact, while the effect of speed and the slide-to-roll ratio was considerably lower. The role of viscoelasticity and grease thickener concentration is discussed.

Anglický abstrakt

The interfaces of plastic components are often operated as self-lubricating or lubricated with greases close to the piezoviscous-elastic lubrication regime. However, current basic tribological knowledge about grease-lubricated compliant contacts is still very limited. This experimental study provides insight into relations between film thicknesses of grease and its base oil in compliant polymethylmethacrylate-steel and stiff glass-steel point contacts at different speeds and loads. The results are compared with predictions. The ratio between grease and its base oil film thickness was found to be significantly influenced by the interplay of load and the non-Newtonian response of grease, especially for the compliant contact, while the effect of speed and the slide-to-roll ratio was considerably lower. The role of viscoelasticity and grease thickener concentration is discussed.

Klíčová slova

Elastohydrodynamic lubrication; rheology; soft elastohydrodynamic lubrication; grease

Klíčová slova v angličtině

Elastohydrodynamic lubrication; rheology; soft elastohydrodynamic lubrication; grease

Autoři

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

Rok RIV

2022

Vydáno

01.12.2021

Nakladatel

SAGE Publications Ltd

Místo

London

ISSN

1350-6501

Periodikum

PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOGY

Svazek

235

Číslo

12

Stát

Spojené království Velké Británie a Severního Irska

Strany od

2616

Strany do

2625

Strany počet

10

URL

https://journals.sagepub.com/doi/10.1177/13506501211053542

BibTex

@article{BUT174116,
  author="Josef {Frýza} and Petr {Šperka} and Ivan {Křupka} and Martin {Hartl}",
  title="Film thickness interrelationship of base oil and grease lubricated compliant and hard non-conformal contacts",
  journal="PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOGY",
  year="2021",
  volume="235",
  number="12",
  pages="2616--2625",
  doi="10.1177/13506501211053542",
  issn="1350-6501",
  url="https://journals.sagepub.com/doi/10.1177/13506501211053542"
}