An Investigation into Grease Behavior in Thermal EHL


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

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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.

Tribology Transactions: Vol 49, No...

An Investigation into Grease Behavior in Thermal EHL Circular Contacts. YANSHUANG WANG & BOYUAN YANG . Pages: 449-453. ... Experimental Investigation of Laser Surface Texturing for Reciprocating Automotive Components Ryk et al. Volume 45, 2002 - Issue 4. Published online: 25 Mar 2008 ...

Lubricants - mdpi.c...

The contact between teeth requires investigation into their tribological behavior focusing on the enamel wear process against natural teeth and/or artificial teeth, allowing us to obtain useful information on the tribological behavior of restorative materials.

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 ...

prof. Ing. Martin Hartl, Ph.D. - Publications – B...

An Investigation on Adhesion Behavior of Solid Particles in Water Contaminated Wheel-Rail Contact. In 2018 International Symposium on Rail Infrastructure Systems Engineering (i-RISE 2018). Proceedings.

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, ...

The Elastohydrodynamic Traction of a Grease LGL...

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.

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.

Mechanical degradation of lubricating grease in an EHL ....

Mechanical degradation of grease in an EHL line contact between two steel rollers is studied. Three successive lubricating phases involving “fully grease covered rollers,” “slippage and grease separation,” and “formation of liquid lubricant reservoirs” are observed and characterized.

Viscosity Loss in PFPE Lubricant for Space Applications ....

The film thickness of 815Z became less than predicted film thickness from Hamrock and Dowson formula for EHL central film thickness. There are two main explanations why PFPE is inferior to mineral oil in their ability to form EHL films, temporary viscosity loss and permanent viscosity loss.

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

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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.

An investigation into grease behavior in thermal EHL ....

Request PDF on ResearchGate | An investigation into grease behavior in thermal EHL circular contacts | The experimental evaluation of grease behavior in elastohydrodynamic point contacts was ...

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 ...

Society of Tribologists & Lubrication Engineers Annual ....

Society of Tribologists & Lubrication Engineers Annual Meeting & Exhibition 2013 Detroit, Michigan, USA ... An Investigation Into the Tribological Performance of Diesel and Diesel-GTBE Blends ... Grease Lubrication – Wear Behavior of Gears Lubricated With NLGI 00 Greases at Low Speeds ...

Fatty-acids-and-antioxidant-effects-on-grease ....

Critical physiochemical properties are therefore dependent on the consistency of grease and their behavior in ... pp. 1–6. 291 Mansot, J.L., 1989. Structural investigation of ...

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.