Results 151 to 160 of about 1,842,362 (193)

A thermal elastohydrodynamic analysis of flats

Wear, 1977
Abstract A thermal Reynolds equation is developed for a lubricant with an exponential viscosity—temperature variation and for surface contacts with different temperatures. The equation is used to analyse the formation of a lubricant film on a flat rigid punch approaching an elastic plane.
openaire   +1 more source

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 elastohydrodynamics in isotropic and anisotropic surfaces

Physics of Fluids
This study investigates thermal elastohydrodynamic lubrication (TEHL) of non-Gaussian rough surfaces with varying microstructural morphologies. Through flow factors, the influence mechanisms of surface roughness, texture patterns, temperature, and pressure on interfacial lubrication performance are thoroughly analyzed.
Haonan Dong, Mengnan Liu, Zhiqiang Gao, Wen Wang, Weiping Fu   +4 more
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 Elastohydrodynamic Lubrication of Rider Rings

Journal of Tribology, 1984
The full thermal elastohydrodynamic analysis of the lubrication of rider rings is presented. A numerical solution of the coupled Reynolds, elasticity, energy, and Laplace’s equations for the oil film thickness, pressure, and temperature and rider rings temperatures is obtained. The temperature variation across the oil film is included.
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

Thermal analysis of an Eyring fluid in elastohydrodynamic traction

Wear, 1980
Abstract Recent research into elastohydrodynamic (EHD) traction has shown that under high pressure and isothermal conditions the flow properties of typical lubricants follow the Eyring relation between shear stress τ and shear rate /.γ: η/.γ = τ 0 sinh( τ τ 0 ) where η is the Newtonian viscosity and τ0 a representative stress. The
K.L. Johnson, J.A. Greenwood
openaire   +1 more source

Thermal elastohydrodynamic lubrication of starved elliptical contacts

Tribology International, 2009
For the starved thermal elastohydrodynamic lubrication in elliptical contacts, a numerical solver based on the multi-grid technique was developed and numerical solutions were achieved. The influences of the thickness of oil-supply layer, elliptical ratio, entrainment velocity, slide-roll ratio, and the maximum Hertzian pressure on the lubrication ...
Changlei Yin, Peiran Yang, Hongen Tan, Jing Wang   +3 more
openaire   +1 more source

A Simplified Thermal Analysis of Elastohydrodynamic Contacts

Journal of Tribology, 2013
Under elastohydrodynamic (EHL) conditions, the temperature in the contact zone determines the load resistance of the lubricant film. Therefore, an efficient assessment of the scuffing risks requires accurate contact temperature predictions. The work presented in this paper develops a simple and prompt temperature model exploitable within any thermal ...
openaire   +1 more source

Traction of Elastohydrodynamic Contacts With Thermal Shearing Flow

Journal of Lubrication Technology, 1975
The formulation and solution for the shear stress and temperature in heavily loaded sliding elastohydrodynamic contacts is presented. The solutions are presented in dimensionless design charts. Integration over the contact area will yield the traction. Accuracy is expected to be very good over the nearly flat part of the contact area where the majority
J. Jakobsen, W. O. Winer
openaire   +1 more source