An Investigation into Grease Behavior in Thermal EHL


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Tribology Transactions: Vol 49, No...

An Investigation into Grease Behavior in Thermal EHL Circular Contacts. YANSHUANG WANG & BOYUAN YANG . ... Analytical and Experimental Investigation of Laser-Textured Mechanical Seal Faces Etsion et al. Volume 42, 1999 - Issue 3. Published online: 25 Mar 2008 ...

Effects of Oil Parameters on Thermal EHL Performance of a ....

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An Investigation into Grease Behavior in Thermal EHL ....

Download Citation on ResearchGate | An Investigation into Grease Behavior in Thermal EHL Circular Contacts | The behaviors of two lithium lubricating greases were investigated under EHL circular ...

A numerical method to investigate the temperature behavior ....

Returning to the analysis method subject, the previous thermal EHL studies only focused on the temperature rise in local contact area without considering the heat transfer conditions. However, the finite element method (FEM) based thermal analysis is a more effective approach to handle heat transfer for bulk and flash temperature filed.

The Development of a Lubricant Traction Measurement Syst...

Abstract. A ball-disc traction test rig is improved through the development of a lubricant traction measurement system, consisting of a resonance force sensitive quartz sensor, a circuit of the sensor and a rigid bracket jointed by a frictionless hinge.

1. Introduction - downloads.hindawi.c...

Finally, the elastohydrodynamic lubrication (EHL) model of axle box bearings is established considering thermal and scale effects. The results show that the central film thickness under thermal EHL was decreased by 13.61% compared with that under isothermal EHL.

An Investigation into Grease Behavior in Thermal EHL Circular Contac...

CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): The behaviors of two lithium lubricating greases were inves-tigated under EHL circular contact through measurements of traction coefficients on a self-made rig in which the contact was continuously fed with fresh grease. The average values of Erying shear stress and shear modulus of the two lithium greases were ...

Lubricants | Free Full-Text | Grease Aging Effects on Film ....

Several film thickness measurements were performed with three fresh and aged lubricating greases, their base and bled oils under a wide range of operating conditions using a ball-on-disc test rig with optical interferometry. The analysis of the film thickness measurements is in agreement with the observations of several authors and adds some important aspects regarding separate film properties ...

Molybdenum disulfide - Wikiped...

Molybdenum disulfide (or moly) is an inorganic compound composed of molybdenum and sulfur. Its chemical formula is MoS 2. The compound is classified as a transition metal dichalcogenide. It is a silvery black solid that occurs as the mineral molybdenite, the principal ore for molybdenum.[6] MoS 2 is relatively unreactive. It is unaffected by ...

The Elastohydrodynamic Traction of a Grease LGLT2 ....

The elastohydrodynamic (EHD) traction coefficients of a lubricating grease LGLT2 were tested at various loads and rolling speeds on a self-made test rig. Traction coefficient versus slide-to-roll ratio curves were generated. Formulae which relate traction coefficient with normal load and rolling speed are put forth.

Cornelis H. Venner – Research Output — University of ....

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Engineering Fluid Dynamics Group: Refereed Articles - TF...

Investigation into the viscoelastic behavior of a thin lubricant layer in an EHL contact. Trib. Int. 111 pp. 197-210 (2017). N.P. Kruyt and O. Millet An analytical theory for the capillary bridge force between spheres J. Fluid Mech. 812 pp. 129-151 (2017). 2016. N.P. Kruyt and L. Rothenburg A micromechanical study of dilatancy of granular materials

A Theoretical and Experimental Study of EHL Lubricated ....

It is known that the apparent viscosity of grease varies with service time and that grease starvation is important in EHL. However, these effects were often ignored in the research of EHL lubricated with grease. This paper deals with the thixotropy of grease and determines which value of rheological parameters can be used in numerical analysis.

Cornelis H. Venner – Research Output — University of ....

Investigation into the viscoelastic behavior of a thin lubricant layer in an EHL contact van Emden, E., Venner, ... Effect of microstructure and rheology on the grease EHL film thickness at medium speeds Cyriac, F., Lugt, ... Thermal Elastohydrodynamic Lubrication of an Optimized Cam–Tappet Pair in Smooth Contact Wu, ...

References for Tribology References Quarterly Uplo...

Volume 42, Issue 3 (March 2009) EDM effects on the thermal properties of 36NiCrMo16 steel Tribological properties of fluorine-containing additives of silicone oil The mechanisms of pedestrian slip on flooring contaminated with solid particles Hydrostatic air foil bearings: Analytical and experimental investigation Chaos of rub–impact rotor ...

Elastohydrodynamic Lubrication (EHL): Theory and Definiti...

Definition of Elastohydrodynamic Lubrication (EHL) Elastohydrodynamic Lubrication – or EHL – is a type of hydrodynamic lubrication (HL) in which significant elastic deformation of the surfaces takes place and it considerably alters the shape and thickness of the separating lubricant film. The term underlies the importance of the elastic deflection of the bodies in contact in the ...

Current Projects | Research groups | Imperial College Lond...

In addition to improving the EHL modelling tools, the project will attempt to generate charts that indicate the contact conditions where the simplified EHL solutions may be used with sufficient accuracy and those where the full CFD solution may be needed. Investigation will also be made into suitable rheology models for grease as a lubricant.

The development of a lubricant traction measurement system ....

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