Detail publikace

Viscoelastic Response of Elastohydrodynamically Lubricated Compliant Contacts below Glass-Transition Temperature

KŘUPKA, J. DOČKAL, K. SEDLÁČEK, T. REBENDA, D. KŘUPKA, I. HARTL, M.

Originální název

Viscoelastic Response of Elastohydrodynamically Lubricated Compliant Contacts below Glass-Transition Temperature

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

The widespread use of polymers in the high-performance engineering applications brings challenges in the field of liquid lubrication in order to separate the rubbing surfaces by the coherent fluid-film thickness relative to not only the inelastic material response of the polymers. The determination of the mechanical properties by the nanoindentation and the dynamic mechanical analysis represents the key methodology to identify the viscoelastic behavior with respect to the intense frequency and temperature dependance exhibited by polymers. The fluid-film thickness was examined by the optical chromatic interferometry on the rotational tribometer in the ball-on-disc configuration. Based on the experiments performed, first, the complex modulus and the damping factor for the PMMA polymer describing the frequency and temperature dependence were obtained. Afterwards, the central as well as minimum fluid-film thickness were investigated. The results revealed the operation of the compliant circular contact in the transition region very close to the boundary between the Piezoviscous-elastic and Isoviscous-elastic modes of the elastohydrodynamic lubrication regime, and a significant deviation of the fluid-film thickness from the prediction models for both modes in dependence on the inlet temperature.

Klíčová slova

compliant contact; elastohydrodynamic lubrication; transition region; fluid-film thickness; optical chromatic interferometry; viscoelastic behavior

Autoři

KŘUPKA, J.; DOČKAL, K.; SEDLÁČEK, T.; REBENDA, D.; KŘUPKA, I.; HARTL, M.

Vydáno

30. 5. 2023

Nakladatel

MDPI

Místo

BASEL

ISSN

2073-4360

Periodikum

Polymers

Ročník

15

Číslo

11

Stát

Švýcarská konfederace

Strany od

1

Strany do

20

Strany počet

20

URL

https://www.mdpi.com/2073-4360/15/11/2528

Plný text v Digitální knihovně

http://hdl.handle.net/11012/213613

BibTex

@article{BUT183968,
  author="Jiří {Křupka} and Kryštof {Dočkal} and Tomáš {Sedláček} and David {Rebenda} and Ivan {Křupka} and Martin {Hartl}",
  title="Viscoelastic Response of Elastohydrodynamically Lubricated Compliant Contacts below Glass-Transition Temperature",
  journal="Polymers",
  year="2023",
  volume="15",
  number="11",
  pages="1--20",
  doi="10.3390/polym15112528",
  issn="2073-4360",
  url="https://www.mdpi.com/2073-4360/15/11/2528"
}