Influence of Solid Body Temperature on the Thermal EHL Behavior in Circular Contacts
Journal of Tribology, 2007In order to investigate the influence of the body temperature of contacting solids on the lubrication performance of machine components, such as gears and roller bearings, a full numerical solution for the thermal elastohydrodynamic lubrication (EHL) problem in circular contacts under steady state has been achieved.
Xiaoling Liu, Peiran Yang
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Numerical investigation of thermal EHL in elliptical contact under impact motion
Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, 2015In this work, the thermal elastohydrodynamic lubrication in elliptical contact under impact motion is investigated numerically by altering oil viscosity and elliptical ratio. The impact-rebound time is shortened with the increase of the elliptical ratio, while a smaller ambient oil viscosity extends the impact-rebound time. Generally speaking, a larger
Wang, Jing +3 more
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Film pressure distributions in point contacts predicted by thermal EHL analyses
Tribology International, 2006Abstract In general, lubricated rolling/sliding contact fatigue problems have been investigated by assuming Hertzian contact pressure distributions. In this paper, thermal EHL analyses in consideration of the variations in oil properties in all directions within the film have been carried out under conditions of circular and elliptical contacts.
Motohiro Kaneta +2 more
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A contribution to the thermal effects of DLC coatings on fluid friction in EHL contacts
Lubrication Science, 2018AbstractDiamond‐like carbon (DLC) coatings are commonly used to reduce boundary and mixed friction in tribological contacts. Recent works at the FZG efficiency gear test rig show that the application of the DLC coating ZrCg (a‐C:H:Zr) on gear flanks reduces the mean coefficient of friction in fluid film lubrication regime by up to 39% compared with ...
K. Bobzin +6 more
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Temperature Distribution and Thermal Degradation of the Lubricant in EHL Line Contact Conjunctions
Journal of Tribology, 1994Temperatures of the lubricant in the inlet zone, the central contact zone, and the outlet zone of EHL line contact conjunctions were simultaneously calculated for a complete range of sliding conditions by using the new thermal circular non-Newtonian EHL model.
Hsing-Sen S. Hsiao, Bernard J. Hamrock
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High sliding EHL contacts : Thermal effects of DLC coatings
Contacts EHL à fort glissement : Effets thermiques des revêtements DLC Cette thèse explore l'influence des revêtements Diamond-Like Carbon (DLC) sur à la fois le frottement et l'épaisseur du film dans les contacts thermo-élastohydrodynamiques (TEHL) pour une large gamme de conditions de glissement.openaire +1 more source
A comparative Newtonian and thermal EHL analysis using physical lubricant properties
2002The influence of changes in specific heat and thermal conductivity of lubricants on the thermal EHL solutions of the line contact is examined in detail. Five Newtonian lubricants were considered; representative of mineral oils, polyalphaolefin and polyglycol.
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Scale and contact geometry effects on friction in thermal EHL: twin-disc versus ball-on-disc
Tribology International, 2021Gerhard Poll, H C Liu
exaly
Thermal Effect on a Mixture Lubrication with Oil-in-Water Emulsions in EHL Contacts
Tribology Transactions, 2021Yu-Te Lin, Rong-Tsong Lee
exaly
The response of thermal Newtonian and non-Newtonian EHL to the vertical vibration of a roller
2003The importance of both thermal and transient effects on elastohydrodynamic lubrication was considered in the present study under line contact conditions, representing gears, cam/followers etc. The generalized Reynolds equation was solved for both Newtonian and non-Newtonian fluids, together with the elasticity, energy and surface temperature equations ...
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