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An Inlet Computation Zone Optimization for EHL Line Contacts
Most EHL numerical calculation methods considering both starved and flooded conditions, employ a fixed multiple of the Hertzian radius for the...
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A Mixed EHL Analysis Method for Grease and Formulas for Film Thickness and Asperity Load
This paper introduces the grease average flow model considering non-Newtonian characteristics into the grease-mixed elastohydrodynamic lubrication...
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An EHL Extension of the Unsteady FBNS Algorithm
Many engineering applications rely on lubricated gaps where the hydrodynamic pressure distribution is influenced by cavitation phenomena and elastic...
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Soft EHL-Based Friction Mechanism of Unreinforced and GF-Reinforced PA66 in Contact with Steel Under PAO8 Oil Lubrication
Polyamide 66 is widely used in polymer sliding parts including polymer gear. These parts are used under lubrication of oil and grease. In this study,...
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A New Film Parameter for Rough Surface EHL Contacts with Anisotropic and Isotropic Structures
Numerous tribological contacts worldwide rely on adequate lubrication quality for proper functionality. Despite this, there is no existing approach...
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Synergy of Viscosity Wedge and Squeeze Under Zero Entrainment Velocity in EHL Contacts
In an elastohydrodynamic lubricated (EHL) contact under Zero Entrainment Velocity (ZEV) condition, surfaces cannot be separated by hydrodynamic lift....
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A Mortar Finite Element Formulation for Large Deformation Lubricated Contact Problems with Smooth Transition Between Mixed, Elasto-Hydrodynamic and Full Hydrodynamic Lubrication
This work proposes a novel model and numerical formulation for lubricated contact problems describing the mutual interaction between two deformable...
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Is Elastohydrodynamic Minimum Film Thickness Truly Governed by Inlet Rheology?
This work investigates the governing mechanisms of minimum film thickness in elastohydrodynamic lubricated contacts. Up until now, it was thought to...
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Numerical Simulation of Sliding Wear in Finite Line Contact Mixed Lubrication
With finite line contact mixed elastohydrodynamic lubrication, rough contact can occur between the two contact surfaces, which can result in material...
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Influence of coating material on elastohydrodynamic lubrication between gear meshing interfaces based on direct coupling solution
Mechanical strength, wear resistance, and corrosion resistance of surface coatings or surface-modified composites and their effects on the contact...
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On the Elastohydrodynamic Film-Forming Properties of Metalworking Fluids and Oil-in-Water Emulsions
Oil-in-water (O/W) emulsions are water-based lubricants and used as fire-resistant hydraulic fluids and metalworking fluids (MWFs) in industry. The...
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A Novel Set-Up for In Situ Measurement and Map** of Lubricant Film Thickness in a Model Rolling Bearing Using Interferometry and Ratiometric Fluorescence Imaging
This paper describes a unique experimental set-up constructed for studies of lubricant behaviour in an operating rolling element bearing including in...
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Lubrication–Contact Interface Conditions and Novel Mixed/Boundary Lubrication Modeling Methodology
Under severe conditions, solid contacts take place even when parts are lubricated. Precise mathematical conditions are needed to describe the...
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A Modified Wear Model Considering Contact Temperature for Spur Gears in Mixed Elastohydrodynamic Lubrication
AbstractIn this study, a modified wear model considering contact temperature for spur gears in mixed elastohydrodynamic lubrication (EHL) is...
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Soft EHL Simulations of Lubricant Film Thickness in Textured Hard-on-Soft Bearings Considering Different Cavitation Models, in the Context of Prosthetic Hip Implants
We use soft elasto-hydrodynamic lubrication simulations to calculate the lubricant film thickness in textured hard-on-soft parallel slider bearings...
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Influences of Boundary Slip Coating on Elastohydrodynamically Lubricated Contacts
Recent research has identified the novel lubrication scheme brought by boundary slip effect in lubrication. However, the implementation of an...
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Achieving Superlubricity of Ricinoleic Acid in the Steel/Si3N4 Contact Under Boundary Lubrication
To improve fuel efficiency and minimize environmental pollution, the interest in organic friction modifiers has resurged, especially fatty acids....
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Application of Tribological Artificial Neural Networks in Machine Elements
Traditionally, analytical equations used in tribo-dynamic modelling, such as those used for predicting central film thickness within...
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In-Situ Observation of the Effect of the Tribofilm Growth on Scuffing in Rolling-Sliding Contact
AbstractGeneral reductions in lubricant viscosities in many machine components mean that the role of lubricant additives in forming tribofilms has...
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Advantages and Limitations of Oil Film Thickness Capacitive Sensor Measurements in Balanced Vane Pumps
Research regarding the Oil Film Thickness (OFT) in balanced vane pumps is especially significant as they are characterized by both loss of contact...