Results 191 to 200 of about 3,174 (231)

A Thermal Model for Elastohydrodynamic Lubrication of Rough Surfaces

Tribology Transactions, 1992
This paper reports on the development of a thermal model that can be 4us1ed to analyze transient elastohydrodynamic lubrication (EHL) of rough surfaces. The thermal domain is composed of three sub-domains, including the film region and the two bounding solids with the thermal boundaries placed inside the solids at which the temperature variation is ...
L. Chang, C. Farnum
openaire   +1 more source

A fast, robust, straightforward algorithm for thermal elastohydrodynamic lubrication

Tribology International, 1993
Abstract A straightforward computational algorithm is developed for solving thermal elastohydrodynamic lubrication problems in concentrated rolling/sliding line contacts. The algorithm is more efficient for pressure calculation than the conventional Newton-Raphson algorithm, can be used in both micro thermal and non-Newtonian thermal ...
Peiran Yang, Shizhu Wen
openaire   +1 more source

Thermal Elastohydrodynamic Lubrication of Point Contacts Using a Newtonian/Generalized Newtonian Lubricant

Tribology Letters, 2008
The classical ElastoHydroDynamic (EHD) theory assumes a Newtonian lubricant and an isothermal operating regime. In reality, lubricating oils do not behave as perfect Newtonian fluids. Moreover, in most operating conditions of an engineering system, especially at high speeds, thermal effects are important and temperature can no longer be considered as ...
Habchi, W., Eyheramendy, D., Bair, S., Vergne, P., Morales-Espejel, G.   +4 more
openaire   +2 more sources

Thermal Elastohydrodynamic Lubrication Analysis of Tilting Pad Thrust Bearings

Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, 2011
The effects of elastic deformation of pad surface, rotational speed, axial load, and oil viscosity grade on tilting pad thrust bearing performance were analysed using the model of thermal elastohydrodynamic lubrication. The Reynolds equation, the viscosity—temperature and density—temperature characteristics of the lubricants, film thickness equation ...
X Jiang, J Wang, J Fang
openaire   +1 more source

Traction in Thermal Elastohydrodynamic Lubrication of Rough Surfaces

Journal of Tribology, 1992
This paper studies the traction behavior of elastohydrodynamically lubricated line contacts between two rough surfaces. The study uses a thermal micro-elastohydrodynamic-lubrication (micro-EHL) model and obtains traction coefficients for a wide range of operating conditions and for film parameters as small as 1.50.
openaire   +1 more source

On the thermal elastohydrodynamic lubrication of tilting roller pairs

Tribology International, 2013
Abstract In order to investigate thermal effect of tilting roller pairs, a numerical solution for TEHL of tilting roller pairs has been presented. Variations in the lubricating performance with tilting angle have been investigated. Comparison between thermal and isothermal solutions has been made.
Xiaoling Liu, Peiran Yang
openaire   +1 more source

Thermal Non-Newtonian Elastohydrodynamic Lubrication of Rolling Line Contacts

Journal of Tribology, 1991
The two-dimensional thermal elastohydrodynamic equations were numerically solved for a Ree-Eyring type lubricant under pure rolling conditions. Profiles of lubricant pressure, film thickness, and temperature were obtained for medium to heavy loads and moderate to high rolling speeds.
H. Salehizadeh, N. Saka
openaire   +1 more source

Thermal effects in elastohydrodynamic lubrication of line contacts using a non-Newtonian lubricant

Tribology International, 1991
Abstract A Reynolds' equation, using Winer's viscoplastic model to express the non-Newtonian fluid property, is derived for line-contact EHL problems. The numerical solutions are obtained to the incorporated Reynolds', elasticity, and energy equations for pressure, film thickness, and temperature distribution between two surfaces simultaneously ...
T.-R. Lin, J.-F. Lin
openaire   +1 more source

A Newtonian thermal elastohydrodynamic lubrication model for ferrofluid‐lubricated involute spur gear pair

Lubrication Science, 2019
AbstractAn elastohydrodynamic model of ferrofluid‐lubricated involute spur gears was established, and transient thermal elastohydrodynamic lubrication (EHL) analysis was conducted using multigrid method and multigrid integral method. The transient lubricant film thickness, pressure, and friction coefficient characteristics of the spur gears were ...
Jing‐jing Zhao, You‐qiang Wang, Ping Zhang, Guang‐xiao Jian   +3 more
openaire   +1 more source

A Generalized Reynolds Equation for Non-Newtonian Thermal Elastohydrodynamic Lubrication

Journal of Tribology, 1990
A new generalized Reynolds equation, which can incorporate most of the rheological laws found in the literature, is derived in this paper. A number of numerical solutions of the line contact thermal elastohydrodynamic lubrication problem has been obtained by using five rheological laws. The results show that, the influence of the non-Newtonian behavior
Yang Peiran, Wen Shizhu
openaire   +1 more source