Results 161 to 170 of about 705 (209)

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, Peiran Yang
exaly   +2 more sources

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   +3 more sources

A simplified approach for thermal elastohydrodynamic lubrication analysis of circular contacts using realistic lubricant properties

Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, 2018
Thermal effect in elastohydrodynamic lubrication has been the subject of extensive research for several decades. The focus of this study was primarily on the development of an efficient numerical scheme to deal with the computational challenges involved
Punit Kumar
exaly   +2 more sources

Thermal Elastohydrodynamic Lubrication of Rough Surfaces

Journal of Tribology, 1990
A numerical solution to the problem of thermal and compressible elastohydrodynamic (EHD) lubrication of rolling/sliding rough surfaces was obtained by neglecting the transient effects. The technique involves the simultaneous solution of thermal Reynolds and modified elasticity equations using the Newton-Raphson technique, and the energy equation using ...
F. Sadeghi, Ping C. Sui
openaire   +1 more source

Thermal Elastohydrodynamic Lubrication of Axially Crowned Rollers

Journal of Tribology, 2021
Abstract This work presents a comprehensive numerical study of thermal elastohydrodynamic lubrication performance in axially crowned rollers, based on a full-system finite element approach. Axial crowning has always been introduced to finite line contacts, as a mean for improving film thickness.
openaire   +1 more source

The Thermal Elastohydrodynamic Lubrication Analysis of Seawater-Lubricated Thordon Bearing

Advanced Materials Research, 2011
Based on Reynolds equation, the numerical simulation of thermal elstohydronamic lubrication for seawater-lubricated thordon bearing was carried out, the effects of the load, the speed and the shaft diameter on the pressure and the film thickness were discussed.
Li Jing Zhang, You Qiang Wang
openaire   +1 more source

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

Formulas Used in Thermal Elastohydrodynamic Lubrication

Tribology Transactions, 1991
A numerical solution to the problem of thermal compressible elastohydrodynamic lubrication of rolling/sliding contacts has been tested over a wide range of operating parameters consisting of dimensionless load, speed, slip, and material parameters. A least squares exponential curve fit was used to develop simple formulas for the amplitude and location ...
Farshid Sadeghi, William D. McClung
openaire   +1 more source

Thermal Elastohydrodynamic Lubrication of Rolling/Sliding Contacts

Journal of Tribology, 1990
A complete numerical solution of thermal compressible elastohydrodynamic lubrication of rolling/sliding contacts has been obtained. The Newton-Raphson technique is used to solve the simultaneous system of Reynolds and elasticity equations. The control volume finite element modeling was employed to solve the energy equation and its boundary conditions ...
F. Sadeghi, P. C. Sui
openaire   +1 more source

Non-Newtonian Thermal Elastohydrodynamic Lubrication

Journal of Tribology, 1991
A numerical solution to the problem of thermal and non-Newtonian fluid model in elastohydrodynamic lubrication is presented. The generalized Reynolds equation was modified by the Eyring rheology model to incorporate the non-Newtonian effects of the fluid.
P. C. Sui, F. Sadeghi
openaire   +1 more source