Results 171 to 180 of about 705 (209)

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

Modeling the effects of solid thermal expansion and thermal stress on elastohydrodynamic lubrication

Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, 2022
Temperature has a significant effect on the performance of elastohydrodynamic lubrication (EHL), and this topic has been extensively covered in many studies. These studies are focused on how temperature affects lubrication performance, without considering the effect of temperature on the deformation and the subsurface stress of the contact bodies ...
Mingfei Ma, Wen Wang, Wenxun Jiang
openaire   +1 more source

Numerical analysis of grease thermal elastohydrodynamic lubrication problems using the Herschel-Bulkley model

Tribology International, 1997
Grease thermal elastohydrodynamic lubrication (TEHL) problems of line contacts are analysed numerically. The effects of temperature and rheological parameters on grease TEHL are investigated using the Herschel-Bulkley model as a rheological model of ...
Kyung-Woong Kim
exaly   +2 more sources

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

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

Thermal Elastohydrodynamic Lubrication of Rolling/Sliding Line Contacts

Journal of Tribology, 1992
The solution of thermal elastohydrodynamic lubrication of rolling/sliding line contacts has been obtained. The Newton-Raphson technique was used to solve the simultaneous system of Reynolds and elasticity equations. The energy equation with boundary conditions was solved by the finite-difference method.
R. Wolff, T. Nonaka, A. Kubo, K. Matsuo
openaire   +1 more source

Damping characteristics of thermal elastohydrodynamic lubricated point contacts

Journal of the Brazilian Society of Mechanical Sciences and Engineering, 2021
The present work envisaged the development of a novel method for computing the damping coefficients of thermal elastohydrodynamic lubricated point contacts based on energy conservation. The effects of load, entrainment velocity, and slide–roll ratio were studied, and the results were compared with the ISO thermal results.
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

A Numerical Solution of the Thermal Elastohydrodynamic Lubrication in an Elliptical Contact

Journal of Lubrication Technology, 1982
A numerical solution for the calculation of thickness and temperature of film and traction coefficients between heavily loaded elliptical contact is developed. To start the calculation a Hertzian pressure distribution modified at the inlet and outlet regions is assumed and the surface deformations are calculated.
H. Bru¨ggemann, F. G. Kollmann
openaire   +1 more source

On the thermal elastohydrodynamic lubrication in opposite sliding circular contacts

Tribology International, 2001
Abstract Cases of elastohydrodynamic lubrication (EHL) point contacts running under opposite sliding conditions have been studied with consideration of the thermal effect for various loads and entrainment velocities. A thermal EHL solver has been developed and proven to be able to deal even with extreme cases under an infinite slide–roll ratio ...
F. Guo, P. Yang, P.L. Wong
openaire   +1 more source