Results 21 to 30 of about 3,174 (231)

A coupled finite-volume CFD solver for two-dimensional elasto-hydrodynamic lubrication problems with particular application to rolling element bearings [PDF]

open access: yes, 2016
This paper describes a new computational fluid dynamics methodology for modelling elastohydrodynamic contacts. A finite-volume technique is implemented in the ‘OpenFOAM’ package to solve the Navier-Stokes equations and resolve all gradients in a ...
Dini, D   +3 more
core   +1 more source

Transient torque reversals in indirect drive wind turbines

open access: yesWind Energy, Volume 26, Issue 7, Page 691-716, July 2023., 2023
Abstract The adverse effect of transient torque reversals (TTRs) on wind turbine gearboxes can be severe due to their magnitude and rapid occurrence compared with other equipment. The primary damage is caused to the bearings as the bearing loaded zone rapidly changes its direction.
Saptarshi Sarkar   +2 more
wiley   +1 more source

Tribology of dust‐stop seals of mixing machines

open access: yesLubrication Science, Volume 35, Issue 3, Page 193-206, April 2023., 2023
Abstract Dust stop seals are widely used in powder and rubber mixing industries. Design of the sealing system requires a continuous supply of pressurised lubricant, which is not recycled because of the risk of contamination. There is also the potential of large volume leakage of oil due to poor sealing, increasing operational costs and necessitating ...
Ehsan Fatourehchi   +5 more
wiley   +1 more source

Tribological Performances of Diamond‐Like Carbon Coatings for Hydraulic Applications

open access: yesChemical Engineering &Technology, Volume 46, Issue 1, Page 118-127, January 2023., 2023
Diamond‐like carbon materials in different combinations were coated onto a nitride steel substrate using two different deposition methods. A tribological investigation was performed to find out their suitability for the tribological contacts in hydraulic axial piston pumps. The application of such materials as unleaded alternatives to materials used in
Murat Kapsiz   +3 more
wiley   +1 more source

Influence of physical-property models on thermal elastohydrodynamic lubrication solutions

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2023
This study numerically obtains the thermal elastohydrodynamic lubrication (TEHL) solutions of different physical-property models of five lubricants and different thermal properties of the solids.
Toshiharu KAZAMA
doaj   +1 more source

Squeeze Film Effect and Its Influence on the Lubrication Characteristics of Slipper Oil Film under Pressure Pulse

open access: yesShock and Vibration, Volume 2023, Issue 1, 2023., 2023
This study aims at the lubricant film between the slipper and swashplate of an axial piston pump. Based on a single piston/slipper assembly model, a mathematical model for the squeeze film effect is developed according to the pressure‐flow transfer process as well as the dynamics of the piston/slipper assembly.
JiaHao Wu   +4 more
wiley   +1 more source

Thermal Analysis of Herringbone Gears Based on Thermal Elastohydrodynamic Lubrication Considering Surface Roughness

open access: yesEnergies, 2021
To predict the temperature distribution of the tooth surface of a herringbone gear pair, a numerical method for the determination of frictional heat generation was proposed by establishing a thermal elastohydrodynamic lubrication (TEHL) model in the ...
Xiaozhou Hu   +3 more
doaj   +1 more source

Interface‐Engineered Graphene‐Coated Titanium Dioxide Nanoparticles for High‐Performance Grease Lubrication

open access: yesAdvanced Materials Interfaces, Volume 13, Issue 3, 3 February 2026.
Graphene‐coated TiO2 core–shell nanoparticles are introduced as multifunctional additives for lithium grease, yielding an 85.7% reduction in wear rate, a 22% decrease in operating temperature, and improved film retention under mixed lubrication.
Ethan Stefan‐Henningsen   +1 more
wiley   +1 more source

Fluctuation assisted spreading of a fluid filled elastic blister

open access: yes, 2017
In this theoretical and numerical study, we show how spatially extended fluctuations can influence and dominate the dynamics of a fluid filled elastic blister as is deforms onto a pre-wetted solid substrate. To describe the blister dynamics, we develop a
Carlson, Andreas
core   +1 more source

Finite Element‐Based Wear Prediction Using Archard's Law for Single Mobility Bearing of Total Hip Prosthesis During Walking: A Literature Review

open access: yesEngineering Reports, Volume 8, Issue 2, February 2026.
This review provides a comprehensive and critical evaluation of computational wear prediction studies in total hip prostheses, with a specific focus on those employing Archard's wear law within finite element frameworks under walking conditions for single mobility bearing designs.
Muhammad Imam Ammarullah   +8 more
wiley   +1 more source

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