On the relevance of analytical film thickness EHD equations for isothermal point contacts: qualitative or quantitative predictions? - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Friction Année : 2016

On the relevance of analytical film thickness EHD equations for isothermal point contacts: qualitative or quantitative predictions?

Résumé

Thin film and elastohydrodynamic lubrication regimes are rather young domains of tribology and they are still facing unresolved issues. As they rely upon a full separation of the moving surfaces by a thin (or very thin) fluid film, the knowledge of its thickness is of paramount importance, as for instance to developing lubricated mechanisms with long lasting and efficient designs. As a consequence, a large collection of formulae for point contacts have been proposed in the last 40 years. However, their accuracy and validity have rarely been investigated. The purpose of this paper is to offer an evaluation of the most widespread analytical formulae and to define whether they can be used as qualitative or quantitative predictions. The methodology is based on comparisons with a numerical model for two configurations, circular and elliptical, considering both central and minimum film thicknesses.

Dates et versions

hal-01423085 , version 1 (28-12-2016)

Identifiants

Citer

Jean David Wheeler, Philippe Vergne, Nicolas Fillot, David Philippon. On the relevance of analytical film thickness EHD equations for isothermal point contacts: qualitative or quantitative predictions?. Friction, 2016, 4 (4), pp.369-379. ⟨10.1007/s40544-016-0133-7⟩. ⟨hal-01423085⟩
64 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More