... texture depth, it appears that cases of the slender texture without branch have higher LCC. The lubrication state of the bearing has a significant effect on the optimization results. In the mixed lubrication state, λ is smaller, the LCC of the texture obtained is better. But when the lubrication...

... for the engagement dynamics of a wet clutch. The numerical and experimental analyses demonstrate the importance of thermal effects when evaluating the dynamics of squeeze-film flow between two rotating disks. Heat transfer affects the viscous and mixed lubrication phases of the engagement process significantly...

... EHL models are modified for mixed lubrication and electrical contacts by incorporating a solid rough surface asperity contact model and a flow factor modified lubrication model. The model accounts for transient effects and considers changes in speed and other parameters during operation. The resulting...

... 09 04 2024 06 06 2024 Graphical Abstract Figure water lubrication secondary lubricating medium oil supply setting oil supply rate CFD simulation hydrodynamic lubrication journal bearings lubricants mixed lubrication viscosity Water has never been ruled out...

...S. Hutt; A. Clarke; H. P. Evans Lubricated non-conformal contacts, such as between gear teeth, operate with high levels of mixed lubrication, where the amount of direct asperity contact depends on operating parameters that influence the film thickness. Understanding of the levels of surface...

..., °C ϑ 2 = bulk temperature wheel, °C λ c = cutoff wavelength, mm ν = kinematic viscosity, mm 2 /s ρ = density, kg/m 3 loss of lubrication gears power loss frictional behavior scuffing boundary lubrication mixed lubrication surface properties...

... Contributed by the Tribology Division of ASME for publication in the J ournal of T ribology . 22 09 2023 30 01 2024 30 01 2024 26 02 2024 friction gears mixed lubrication Recently, the trend of electric vehicle (EV) shift in the automobile industry has been increasing...

...Bingqing Wang; Xiaoxuan Li; Xudong Peng; Yuntang Li; Yuan Chen; Jie Jin Thermoelastohydrodynamic (TEHD) mixed lubrication characteristics of a step-combined rod seal under high-pressure and high-speed conditions are analyzed in this article. A novel TEHD mixed lubrication model for combined rod...

... in the J ournal of T ribology . 12 04 2023 02 08 2023 04 08 2023 14 09 2023 grease tribology nanoparticle bearing vibration nano-CaCO 3 bio-lubricants grease lubrication lubricant additives mixed lubrication nano-tribology Grease is a semi-solid lubricant...

... hydrodynamic lubrication mixed lubrication seals surface roughness and asperities In 1992, Salant and Holmiller [ 6 ] conducted a parametric numerical study to understand the influence of the geometry of the grooves on the behavior of a liquid lubricated seal. The same authors showed...

...Chunjie Wei; Hui Song; Zhaowen Hu; Wei Wang The tribological performance of scrolls lubricated with CO 2 /oil mixture is investigated using a combination of the mixed lubrication model and the homogeneous model. The physical characteristics of the CO 2 /oil mixture were established prior to using...

... for publication in the J ournal of T ribology . 21 11 2022 03 02 2023 09 02 2023 07 03 2023 nitrogen-doped graphene friction and wear high temperature lubrication mechanism mixed lubrication nano-tribology piston rings wear mechanisms National Natural Science...

...Chunxing Gu; Li Dai; Di Zhang In order to explore the influence of different acceleration and deceleration forms on the bearing performance during acceleration and deceleration, an isothermal and mixed lubrication model for journal bearings was established. In this model, the fluid mechanics...

... 2022 time-varying mesh stiffness gear crack mixed elastohydrodynamic lubrication planetary gear system contact mechanics elastohydrodynamic lubrication friction mixed lubrication National Natural Science Foundation of China 10.13039/501100001809 51775265 51775277...

... formulated engine oil under boundary and mixed lubrication conditions. The friction behavior of the coated material relative to uncoated materials is compared in boundary and mixed lubrication regimes. A traction-merging rolling speed in the mixed lubrication regime is observed, at which friction coefficient...

... observed in the boundary and mixed lubrication regimes. The mean wear scar diameters exhibited positive correlations with the amplitudes of vibration accelerations. The empirical equations provide basic information for the prediction of friction variation by measuring vibration signals. References [1...

...Tie-jun Li; Yan-hong Yang; Yi-min Zhang; Chun-yu Zhao The existing fractal contact model fails to solve the problem of online real-time irregular curvilinear contact under mixed lubrication conditions. In this study, a novel arbitrary curve contact model is established, considering the actual...

... 2022 mixed lubrication seals two-phase flow CFD In the subsea oil and gas industry, multiphase pumping and wet gas compression systems have met challenges to work efficiently and reliably with process streams having time-varying gas volume fractions (GVF). Note that the interval...

... on the three-dimensional (3D) tribodynamics of piston rings are limited. The tribodynamic model which couples the dynamics, mixed lubrication, and blow-by of piston-ring pack assemblies has not been found yet. Therefore, in this study, a 3D tribodynamic model of the piston-ring pack is developed considering...

... interface micro-texture thermoelastic hydrodynamic lubrication anti-scuffing load-bearing fractal microstructure design gears micro-tribology mixed lubrication surface properties and characterization thermoelastohydrodynamic lubrication wear mechanisms Involute cylindrical gears are often...