منابع مشابه
Soft lubrication.
We consider some basic principles of fluid-induced lubrication at soft interfaces. In particular, we quantify how a soft substrate changes the geometry of and the forces between surfaces sliding past each other. By considering the model problem of a symmetric nonconforming contact moving tangentially to a thin elastic layer, we determine the normal force in the small and large deflection limit,...
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Lubrication flows appear in many applications in engineering, biophysics, and in nature. Separation of surfaces and minimisation of friction and wear is achieved when the lubrication fluid builds up a lift force. In this paper we analyse soft lubricated contacts by treating the solid walls as viscoelastic: soft materials are typically not purely elastic, but dissipate energy under dynamical loa...
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A friction test rig has been developed to carry out repeated sliding friction tests for premium tubular connections. The test rig enables accurate measurement of friction in various contact regimes which are relevant to the threaded connections between tubular components. Higher load tests can simulate the contact in metal-to-metal seals under very high contact pressures by using perpendicular ...
متن کاملSoft lubrication: The elastohydrodynamics of nonconforming and conforming contacts
We study the lubrication of fluid-immersed soft interfaces and show that elastic deformation couples tangential and normal forces and thus generates lift. We consider materials that deform easily, due to either geometry e.g., a shell or constitutive properties e.g., a gel or a rubber , so that the effects of pressure and temperature on the fluid properties may be neglected. Four different syste...
متن کاملSelf-sustained lift and low friction via soft lubrication
Baudouin Saintyves, Théo Jules, 2 Thomas Salez, 3 and L. Mahadevan ∗ Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA Département de Physique, ENS, PSL Research University, 75005 Paris, France PCT Lab, UMR CNRS 7083 Gulliver, ESPCI Paris, PSL Research University, 75005 Paris, France Paulson School of Engineering and Applied Sciences, Department of...
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ژورنال
عنوان ژورنال: Journal of Fluid Mechanics
سال: 2021
ISSN: ['0022-1120', '1469-7645']
DOI: https://doi.org/10.1017/jfm.2021.96