Results 201 to 210 of about 55,859 (248)

Theory of friction and boundary lubrication

Physical Review B, 1993
When an external force acts on an adsorbate structure, the structure may slide or flow relative to the substrate. The mechanism behind this sliding motion is of fundamental importance for the understanding of friction and lubrication between two flat macroscopic surfaces, and is also related to the question of what boundary condition should be used for
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Theory of viscoelastic lubrication

Tribology International, 2014
Abstract We study the lubricated (wet) contact mechanics of a smooth hard cylinder sliding on a randomly rough nominally flat surface of a linear viscoelastic solid. We calculate the rolling and sliding friction, and study the transition from the boundary lubrication to the elasto-hydrodynamic lubrication regime.
SCARAGGI, MICHELE, B. Persson
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A theory for ferromagnetic lubrication

Journal of Magnetism and Magnetic Materials, 1987
Abstract A generalized form of Reynolds' equation governing the pressure in a thin film of a ferrofluid in presence of transversely applied magnetic field is derived by considering rotation of particles. This equation is used to study the effects of applied magnetic field and the Brownian relaxation time parameter on the bearing characteristics of ...
J.B. Shukla, D. Kumar
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On weeping lubrication theory

Zeitschrift für angewandte Mathematik und Physik ZAMP, 1969
Der Einfluss einer bewegten Last auf einen zusammengesetzten Korper wird untersucht. Dieser besteht aus einer poroselastischen Schicht auf einer elastischen Halbebene. Das Modell simuliert die mechanische Belastung eines hyalinen Knorpels endlicher Dicke, der die Oberflache von Knochengelenken bedeckt.
Mow, M. C., Ling, F. F.
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A Theory of Boundary Lubrication

A S L E Transactions, 1959
The mechanism of boundary friction is assumed here to be due to the molecular forces between hydrocarbon molecules adsorbed on the surfaces rather than to welding and tearing of the opposing surface roughness. On this assumption the frictional force, which arises when two orientated layers are moved over each other, can be calculated.
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On the Effect of Lubricant Inertia in the Theory of Hydrodynamic Lubrication

Journal of Basic Engineering, 1959
A theoretical study is made of the corrections required to the basic lubrication equations to allow for small effects of lubricant inertia in the laminar regime. The problem is approached by first determining the stream function for a wedge-shaped oil film with purely viscous flow and then obtaining the first-order correction for inertia.
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Elastohydrodynamic Lubrication Theory

1993
Publisher Summary This chapter focuses on the load capacity of the conventional, liquid-lubricated, journal bearing benefits from the close conformity between two surfaces. Common forms of thrust bearing have films of similar proportions. This is not applicable for gear tooth engagements, cams and followers, and nor for the contact between rolling ...
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Lubrication and the Theory of Corrosion

Scientific Lubrication, 1963
The lubrication process may become interrelated with corrosion phenomena. Lubricants may be the products of a corrosion process, e.g., during boundary lubrication. They may also serve as a medium which protects the metal during the lubrication process from the corrosive attack of a humid and acidic atmosphere.
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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 ...
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Limits to Lubrication Theory in Microsystems

STLE/ASME 2008 International Joint Tribology Conference, 2008
Lubrication theory has been one of the most successful and widely used theories in all of engineering and applied science. Therefore, researchers from tribology’s ‘traditional’ wing would be surprised to know that lubrication theory is not at all treated as a given by large group of nontraditional users. In a wide range of conditions applicable to many
John Tichy, Victor Marrero, Diana-Andra Borca-Tasciuc   +2 more
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