Crucial role of solid body temperature on elastohydrodynamic film thickness and traction

Haichao Liu (Corresponding Author), Binbin Zhang, Norbert Bader, Feng Guo, Gerhard Poll, Pei Yang

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

The effect of the solid body temperature effect on film thickness and traction in elastohydrodynamic lubrication (EHL) has been studied numerically. At a moderate entrainment velocity, the EHL film behavior is controlled by the solid body temperature as the oil heats up to the body temperature before entering the contact zone and thus the film thickness decreases. For high velocity conditions, inlet shear and compressive heating also contribute to the reduction of film thickness. The results indicate that the measured film thickness and traction on disc machines might be lower than the expected values when the disc temperature exceeds the supplied oil temperature.
Original languageEnglish
Pages (from-to)386-397
JournalTribology international
Volume131
Early online date9 Nov 2018
DOIs
Publication statusPublished - 1 Mar 2019

Fingerprint

elastohydrodynamics
body temperature
Elastohydrodynamics
traction
Film thickness
film thickness
Elastohydrodynamic lubrication
lubrication
Oils
oils
Temperature
entrainment
Thermal effects
temperature effects
shear
Heating
heat
heating
temperature

Keywords

  • UT-Hybrid-D

Cite this

Liu, Haichao ; Zhang, Binbin ; Bader, Norbert ; Guo, Feng ; Poll, Gerhard ; Yang, Pei. / Crucial role of solid body temperature on elastohydrodynamic film thickness and traction. In: Tribology international. 2019 ; Vol. 131. pp. 386-397.
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Crucial role of solid body temperature on elastohydrodynamic film thickness and traction. / Liu, Haichao (Corresponding Author); Zhang, Binbin ; Bader, Norbert; Guo, Feng; Poll, Gerhard; Yang, Pei.

In: Tribology international, Vol. 131, 01.03.2019, p. 386-397.

Research output: Contribution to journalArticleAcademicpeer-review

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T1 - Crucial role of solid body temperature on elastohydrodynamic film thickness and traction

AU - Liu, Haichao

AU - Zhang, Binbin

AU - Bader, Norbert

AU - Guo, Feng

AU - Poll, Gerhard

AU - Yang, Pei

N1 - Elsevier deal

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N2 - The effect of the solid body temperature effect on film thickness and traction in elastohydrodynamic lubrication (EHL) has been studied numerically. At a moderate entrainment velocity, the EHL film behavior is controlled by the solid body temperature as the oil heats up to the body temperature before entering the contact zone and thus the film thickness decreases. For high velocity conditions, inlet shear and compressive heating also contribute to the reduction of film thickness. The results indicate that the measured film thickness and traction on disc machines might be lower than the expected values when the disc temperature exceeds the supplied oil temperature.

AB - The effect of the solid body temperature effect on film thickness and traction in elastohydrodynamic lubrication (EHL) has been studied numerically. At a moderate entrainment velocity, the EHL film behavior is controlled by the solid body temperature as the oil heats up to the body temperature before entering the contact zone and thus the film thickness decreases. For high velocity conditions, inlet shear and compressive heating also contribute to the reduction of film thickness. The results indicate that the measured film thickness and traction on disc machines might be lower than the expected values when the disc temperature exceeds the supplied oil temperature.

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U2 - 10.1016/j.triboint.2018.11.006

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