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Showing 1 to 11 of 11 for “"mixed lubrication"”.
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Numerical Simulation of Contacts Working Under Mixed Lubricating Conditions
Numerical simulation of lubrication is a powerful and cost-effective tool for designing machinery that is both efficient and durable compared to experimental methods. It helps to understand and optimise the behaviours of lubricants under various operating conditions. Additionally, it also allows …
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Mixed and boundary lubrication in synovial joints
… surfaces and direct contact occurs within a mixed or boundary regime. Under these conditions friction must remain low to prevent damage to the articular cartilage. The lubrication mechanisms which continue to provide low friction and minimum wear in synovial joints are far from clearly …
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Friction and lubrication in metal rolling
… physical processes which determine friction and lubrication in metal rolling in the mixed lubrication regime, with particular attention paid to the conditions encountered when rolling aluminium foil. Two areas of relevance to the analysis of the rolling process are initially investigated. …
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Effects of piston design and lubricant selection on reciprocating engine friction
… model incorporated hydrodynamic, boundary, and mixed lubrication modes, and it allowed for either fully-flooded or partially-flooded skirts. It also considered the effects of skirt deformation in response to applied loads. A dominant factor influencing net friction between the skirt and liner …
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Friction and lubrication behaviour of hip resurfacing metal-on-metal and ZTA ceramic on CFR peek implants with various diameters and clearances. Friction and lubrication behaviour of hip resurfacing Co-Cr-Mo and zirconia toughened alumina ceramic heads against carbon fibre reinforced poly-ether-ether-ketone cups with various diameters and clearances have been investigated using serum-based lubricants.
… UHMWPE. In this study, therefore, friction and lubrication properties of large diameter, as cast, Co-Cr-Mo metal-on-metal hip resurfacing implants with various diameters and clearances have been investigated and compared to those of the newly developed zirconia toughened alumina (ZTA) ceramic …
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Factors affecting piston ring friction
… were designed to ensure that all the lubrication modes, namely, boundary, mixed and hydrodynamic, can become dominant in both the instantaneous friction over a cycle and the FMEP over the engine speed range for any combination of rings, liners and lubricants. A parallel modeling effort …
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Friction and lubrication behaviour of metal-on-metal and ZTA ceramic-on-CFR PEEK hip prostheses. Friction and lubrication behaviour of metal-on-metal hip resurfacing and ZTA ceramic heads versus CFR PEEK cups wiith various diameters and clearances using serum-based lubricants with various viscosities.
… hip joint with low wear, low friction, good lubrication, better fixation/stability and biocompatibility. Many different designs and materials have been investigated with some promising new implants which can be used depending on patients¿ individual need (large or small joint), activity and …
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Tribology of polymeric coatings for aggressive bearing applications
… lubricants are limited such that the state of lubrication is usually unknown, and, at best, in the boundary/mixed lubrication regimes. Therefore, it becomes necessary to implement some type of advanced protective coatings on the interacting surfaces to withstand stringent contact conditions. …
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The effect of clearance upon friction and lubrication of large diameter hip resurfacing prosthesis using blood and combinations of bovine serum with aqueous solutions of CMC and hyaluronic acid as lubricants.
… The effect of these properties on friction and lubrication is not fully understood and, so far to our knowledge, hardly any studies have been carried out regarding friction of metal-on-metal bearings with various clearances in the presence of lubricants such as blood or a fluid containing …
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The effect of base stock and additive packages in an automotive oil on the friction and wear behaviour of overhead camshaft and finger follower systems
… the mineral base oil under high load, boundary lubrication conditions. Scuffing also occurred under low load, mixed lubrication conditions using the case-hardened steel cam and chilled white iron follower combinations. The remaining cam materials, carbonitrided and induction hardened grey flake …
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Záběh povrchů strojních součástí
Tato bakalářská práce se zabývá vlivem změny topografie na průběh záběhu součásti. Cílem bylo vyhodnotit časovou změnu součinitele tření během záběhu pěti ocelových kuliček s různým opracováním povrchu. Experiment byl proveden při smíšeném mazání kontaktu. Dále bylo úkolem po určitých časových …