Results 231 to 240 of about 1,987,255 (280)

Dynamic Adsorption in Mixed Lubrication

Tribology Transactions, 1989
The effect of additive adsorption on friction and wear of sliding contacts under mixed lubrication conditions has been analysed. Dynamic aspects of adsorption are taken into account by relating desorption in the contact zone to increased temperature rather than to some mechanical action.
A. K. Van Helden, P. H. Vroegop, J. J. M. Jongh   +2 more
openaire   +1 more source

Mixed Lubrication of Strip Rolling

Tribology Transactions, 1994
An analytical model for strip rolling operating in the mixed regime is developed. The model combines analysis for the influence of bulk plastic deformation on the effective hardness of the strip asperities with an approach to allow for the influence of roughness on lubricant flow. An approximate correction for thermal effects is also included.
Shen Sheu, William R. D. Wilson
openaire   +1 more source

A Theory of Mixed Lubrication

Proceedings of the Institution of Mechanical Engineers, 1972
The phenomena observed when a lubricated contact or bearing is operating under mixed lubrication conditions are assumed to arise from an interaction of the surface asperities or roughness as well as from hydro-dynamic action of the sliding surfaces. It is shown how one of the previously published stochastic models of hydrodynamic lubrication can be ...
openaire   +1 more source

Chemical Films and Mixed Lubrication

A S L E Transactions, 1983
This paper relates studies of film behavior in mixed lubrication in a concentrated contact. In the simulator, 52100 steel specimens and TCP in hexadecane as lubricant are used. When the pure EHL regime is studied, no solid film is formed on surfaces, but within the boundary lubrication regime, the chemical decomposition of the additive contributes to a
J. M. Georges, A. Tonck, G. Meille, M. Belin   +3 more
openaire   +1 more source

Reduced description of mixed lubrication

Tribology International, 2008
Modelling friction and wear between rough and lubricated surfaces is an important problem of modern technologies. The complexity of the problem is in the necessity of simultaneously solving for elastic deformations of contacting bodies and fluid flow between the bodies.
Thomas Geike, Valentin L. Popov
openaire   +1 more source

Mixed rheologies in elastohydrodynamic lubrication

Industrial Lubrication and Tribology, 2004
This paper studies elastohydrodynamic lubrication (EHL) of line contacts for the slide‐roll ratios 0‐2 based on the assumptions of interfacial shear strength and interfacial slip. It is shown that the viscoelastic, viscoplastic and non‐continuum fluids distribute from the inlet zone to the Hertzian contact zone in order for a given operating condition ...
openaire   +1 more source

A numerical method for the calculation of lubricant pressures in bearings with mixed lubrication

Tribology International, 1982
Abstract A model for mixed lubrication, assuming that the total normal load applied to the plane of the lubricated surfaces is carried partly by the hydrodynamic action of the lubrication film and partly by asperity contacts and that the total friction force between the lubricated surfaces is partly due to viscous friction and partly to asperity ...
M.E. Weyler, Chih Wu
openaire   +1 more source

Effect of Liquid-Solid Lubricant on Mixed Lubrication in Line Contact

Applied Mechanics and Materials, 2011
This paper presents the performance characteristics of two surfaces in line contact under isothermal mixed lubrication with non-Newtonian liquid–solid lubricant base on Power law viscosity model. The time dependent Reynolds equation, elastic equation and viscosity equation were formulated for compressible fluid.
Rattapasakorn Sountaree, Panichakorn Jesda, Mongkolwongrojn Mongkol   +2 more
openaire   +1 more source

Mixed Mechanism of Lubrication by Lipid Bilayer Stacks

Langmuir, 2015
Although the key role of lipid bilayer stacks in biological lubrication is generally accepted, the mechanisms underlying their extreme efficiency remain elusive. In this article, we report molecular dynamics simulations of lipid bilayer stacks undergoing load and shear.
Botan, Alexandru, Joly, Laurent, Fillot, Nicolas, Loison, Claire   +3 more
openaire   +3 more sources

Mixed lubrication regime

2016
La lubrification mixte intervient dans un contact travaillant en présence d’un lubrifiant liquide, mais dans les conditions particulières de fonctionnement qui conduisent à l’absence d’une séparation complète des 2 pièces en regard, par le film lubrifiant.
Robbe-Valloire, Francois, Progri, Robert
openaire   +1 more source