... of quantitative elastohydrodynamics where the temporary shear dependence of the viscosity or shear-thinning of the liquid must be known. Pressure shifting is obviously a requirement for any lubrication application because for a bearing supporting a load the liquid film must operate at elevated pressure...

... the latter. However, the purpose of this study is to elucidate and explain the basic characteristics on the impact elastohydrodynamics. Therefore, 0 ≤ X ≤ 3 and 0 ≤ Y ≤ 3 for k e = 1 and 0 ≤ X ≤ 6 and 0 ≤ Y ≤ 3 for k e = 2...

...Azam Thatte; Richard F. Salant A visco-elastohydrodynamic model of a hydraulic rod seal during transient operation has been developed. The model includes analyses of the macro- and microscale deformation mechanics and contact mechanics, and the microscale fluid mechanics. Viscoelasticity enters...

... 03 2010 differential equations elasticity elastodynamics finite element analysis friction hydrodynamics liquid films machine bearings oils rotors valves tilting-pad journal bearings control elastohydrodynamics vibration Overview of the different domains, the fluid...

...Azam Thatte; Richard F. Salant A soft elastohydrodynamic model of a reciprocating elastomeric hydraulic rod seal has been developed. It consists of coupled fluid mechanics, contact mechanics, and deformation analyses. The model has been used to analyze a U-cup lip seal in an injection molding...

...Bo Yang; Richard F. Salant A numerical soft elastohydrodynamic lubrication model of a reciprocating hydraulic seal has been used to simulate the performance of a U-cup seal and a step seal in a conventional actuator. The model consists of coupled steady state fluid mechanics, deformation mechanics...

...Scott Bair; Riccardo Casalini Quantitative calculations of film thickness and friction in elastohydrodynamic lubrication will require that the low-shear viscosity, μ , be described with far greater accuracy than it is today. The free volume model has the advantage, over those currently used...

... 06 2008 deformation elastomers fluid mechanics hydraulic systems mechanical contact seals (stoppers) reciprocating seal rod seal hydraulic seal elastohydrodynamics The reciprocating rod seal plays an important role in the operation of hydraulic actuators since it must...

... polymer additives are often added to the base oil. This paper investigates the effect of mixture rheology on elastohydrodynamic lubrication (EHL) film thickness using EHL contact measurements and a full numerical analysis for three synthetic lubricants including two single-component lubricants PAO650...

...Philip C. Hadinata; Lyndon Scott Stephens A numerical analysis is conducted to investigate the elastohydrodynamic effect of deterministic microasperities on the shaft of a lip seal. Various geometries of microasperities (triangular, square, hexagonal, and circular) are put into a 100 × 100 μ m 2...

... – 163 . Field , G. J. , and Nau , B. S. , 1974 , “ A Theoretical Study of the Elastohydrodynamic Lubrication of Reciprocating Rubber Seals ,” ASLE Trans. 0569-8197 , 18 , pp. 48 – 54 . Ruskell , L. E. C. , 1980 , “ A Rapidly Converging Theoretical Solution...

... film thickness elastohydrodynamics For engineering calculations of Newtonian concentrated contact film thickness, the rheological properties of the liquid lubricant have always been described by two parameters, the ambient viscosity μ 0 and the pressure-viscosity coefficient...