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research-article

Influence of lubricant inlet film thickness on EHL contact starvation

[+] Author and Article Information
David Kostal

Assistant Professor Institute of machine design Faculty of mechanical engineering University of Technology Technicka 2=2896, Brno 63600 CZE
kostal@fme.vutbr.cz

Petr Sperka

Assistant Professor Institute of machine design Faculty of mechanical engineering University of Technology
sperka@fme.vutbr.cz

Petr Svoboda

Associate Professor Institute of machine design Faculty of mechanical engineering University of Technology
petr.svoboda@vut.cz

Ivan Krupka

Professor Institute of machine design Faculty of mechanical engineering University of Technology
krupka@fme.vutbr.cz

Martin Hartl

Professor Institute of machine design Faculty of mechanical engineering University of Technology
hartl@fme.vutbr.cz

1Corresponding author.

ASME doi:10.1115/1.4035777 History: Received August 23, 2016; Revised December 29, 2016

Abstract

The paper deals with an experimental study of an elastohydrodynamic contact under insufficient lubricant supply. Theoretical studies published in this research area focus mainly on the development of theoretical models and there is a lack of experimental validation of the theoretical models. This paper presents original experimental results and aims to describe the starvation severity level as a function of the inlet film thickness and contact geometry. Experimental data are compared with an analytical model for point contacts published by Chevalier. The study was also extended to elliptical contacts to achieve a comparison with the different parameter of the side-flow resistance used by Damiens. Both models agree well with the experiments.

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