Results 261 to 270 of about 55,747 (307)

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
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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 ...
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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
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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
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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

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
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Simulation of Sliding Wear in Mixed Lubrication

Journal of Tribology, 2007
Sliding wear is a significant surface failure mode in many mechanical components. The magnitude of changes in surface topography due to wear may be comparable to or larger than the original surface roughness and elastic deformation. However, wear has rarely been incorporated into the numerical models used as predictive tools in engineering practice ...
Dong Zhu, Ashlie Martini, Wenzhong Wang, Yuanzhong Hu, Bohdan Lisowsky, Q. Jane Wang   +5 more
openaire   +1 more source

A Mixed Flow Model for Lubrication with Emulsions

Tribology Transactions, 1994
An oil-in-water emulsion in the inlet zone of a concentrated contact is modeled by treating the oil particles as flattened cylinders surrounded by water. In an independent flow model, the oil and water flows are coupled only through the pressure gradient. However, the model leads to anomalous behavior with regard to the flow of water.
W. R. D. Wilson, Y. Sakaguchi, S. R. Schmid   +2 more
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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
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Wear of Machine Parts with Mixed Lubrication

Russian Engineering Research, 2018
Energy analysis of the wear of machine parts in mixed lubrication indicates that whether the components of the frictional pair seize together depends on the load, the slip rate, the temperature of the frictional surfaces, the temperature surges, the surface energy, the distribution coefficients of the heat flux, and the external overlap.
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