... velocity) on the coefficient of friction (COF). A modified Reynolds equation, an elasticity equation, a rheology equation (density–pressure relation, viscosity–pressure connection), and a force balance equation are all combined in the current study to provide a solution. It would be problematic...

.../501100005195 2023QN1047 journal bearing non-Newtonian lubricants start-up mixed lubrication journal bearings rheology Graphical Abstract Figure Effect of rheology Effect of rheology 27 11 2024 29 01 2025 30 01 2025 25 02 2025 Contributed...

...Jacob Bonta; Jonathan T. Pham The effect of base oil viscosity and temperature on the thixotropic recovery of lubricating grease (LG) is investigated via shear rheology. The viscosity of the base lubricant phase of LGs impacts the storage modulus in both the undisturbed and post-sheared states...

... author. Email: scott.bair@me.gatech.edu Email: wassim.habchi@lau.edu.lb Contributed by the Tribology Division of ASME for publication in the J ournal of T ribology . 27 11 2024 09 01 2025 10 01 2025 07 02 2025 traction coefficient high-pressure rheology...

... of bubbly oil bubble surface tension measurement of bubbly oil viscosity observation of bubble distribution mixed lubrication rheology Bubbly oil lubrication has been a focus of tribology researchers [ 1 – 3 ], which shows great potential for widespread application in high-speed mechanical...

... wear lubricant additives rheology While the term Electric Vehicles (EVs) has historically implied battery-powered passenger vehicles, modern EVs take various shapes and sizes. From plug-in hybrid EVs to monorails powered by a continuous power supply, EVs have emerged as a popular...

... ribology . 04 06 2024 08 08 2024 09 08 2024 11 09 2024 Graphical Abstract Figure calcium sulfonate complex grease polyurea complex grease tribological properties rheology grease lubrication sliding surface properties and characterization Friction...

... numerical calculation bearings friction rheology thermoelastohydrodynamic lubrication The relative sliding between two surfaces is characterized by the slide-roll ratio (SRR), with a higher slide-roll ratio indicating a more significant relative slip. When the velocities of the two surfaces...

... core traction film thickness rheology The characteristics of a lubricated interface are notably influenced by the viscosity of the lubricant and its response to variations in shear rate, temperature, and pressure. Once a lubricant is chosen for a specific application, its viscosity...

... to enumerate the advances in understanding brought on by the application of high-pressure rheology to the EHL problem. The pressure dependence of the low-shear viscosity, which has been measured in viscometers for nearly a century, differs from the narratives taught to tribology students and often used...

... 2023 09 01 2024 elastohydrodynamic lubrication rheology rolling element bearings Nowhere has the advantage of the quantitative approach over the classical approach to elastohydrodynamic lubrication (EHL) been more apparent than for the calculation of film thickness in refrigerant...

... elastohydrodynamic film thickness optical elastohydrodynamic film thickness elastohydrodynamic lubrication fluid film lubrication rheology rolling element bearings Elastohydrodynamic lubrication (EHL) theory demonstrates how relative motion can entrain a viscous liquid into a geometric wedge, giving...

... 2023 grease lubrication rheology seals viscosity Science and Engineering Research Board 10.13039/501100001843 EMR/2017/03440 Magnetorheological grease (MRG) comes under the category of smart materials which is capable of reversibly altering its rheology under...

...Robert J. Sadinski; Carl H. Hager, Jr.; William M. Hannon The relative volume and falling body viscosity of a common high-pressure rheology reference lubricant, di-(2-ethylhexyl) sebacate (DEHS), are presented. Relative volume measurements up to 300 MPa are completed with a piezo-bellows relative...

... lubricants rheology Russian Foundation for Basic Research 10.13039/501100002261 20-38-90023 The proposed methodology may be applied not only to the UCM model. For example, the case of variable viscosity may be considered and a modified Reynolds equation for the Eyring-type UCM model...

.... Email: csarkar@iitp.ac.in Contributed by the Tribology Division of ASME for publication in the J ournal of T ribology . 02 07 2021 24 08 2021 24 08 2021 09 11 2021 clutches fluid friction hydrodynamic lubrication rheology The investigation...

... bearings lubricants rheology surface properties and characterization In this period of fast technological developments, simplification of complex problems and cost-effective solutions are the key factors in development of any machine component. The application of micro-grooves on the bearing...

... ,” Sci. Rep. , 8 ( 1 ), pp. 1 – 9 . 10.1038/s41598-018-30861-4 [22] Thakur , M. K. , and Sarkar , C. , 2020 , “ Influence of Graphite Flakes on the Strength of Magnetorheological Fluids at High Temperature and Its Rheology ,” IEEE Trans. Magn. , 56 ( 5 ), pp. 1 – 10 . 10.1109...

... fitting this specification in Fig. 1 . These measurements were performed at the Georgia Tech Center for High-Pressure Rheology. The viscometer values were calculated as the reciprocal asymptotic pressure coefficient, α * , which is the definition used by Hamrock and Dowson [ 3 ], the source...

... rheology surfaces tribological systems viscosity A magnetorheological (MR) clutch is a device where MR fluid (MRF) is sheared between a driving and a driven disc. MRFs have some advantages over other rheological fluids such as higher yield stress and comparatively low voltage requirements...