On the relevance of analytical film thickness EHD equations for isothermal point contacts: Qualitative or quantitative predictions?
Abstract 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,...
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| Language: | English |
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Tsinghua University Press
2016-12-01
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| Series: | Friction |
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| Online Access: | http://link.springer.com/article/10.1007/s40544-016-0133-7 |
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| author | Jean-David Wheeler Philippe Vergne Nicolas Fillot David Philippon |
| author_facet | Jean-David Wheeler Philippe Vergne Nicolas Fillot David Philippon |
| author_sort | Jean-David Wheeler |
| collection | DOAJ |
| description | Abstract 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. |
| format | Article |
| id | doaj-art-1cd6598139214ef0b5486d4be01de13a |
| institution | DOAJ |
| issn | 2223-7690 2223-7704 |
| language | English |
| publishDate | 2016-12-01 |
| publisher | Tsinghua University Press |
| record_format | Article |
| series | Friction |
| spelling | doaj-art-1cd6598139214ef0b5486d4be01de13a2025-08-20T03:09:50ZengTsinghua University PressFriction2223-76902223-77042016-12-014436937910.1007/s40544-016-0133-7On the relevance of analytical film thickness EHD equations for isothermal point contacts: Qualitative or quantitative predictions?Jean-David Wheeler0Philippe Vergne1Nicolas Fillot2David Philippon3Univ Lyon, INSA Lyon, CNRS, LaMCoS-UMR5259Univ Lyon, INSA Lyon, CNRS, LaMCoS-UMR5259Univ Lyon, INSA Lyon, CNRS, LaMCoS-UMR5259Univ Lyon, INSA Lyon, CNRS, LaMCoS-UMR5259Abstract 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.http://link.springer.com/article/10.1007/s40544-016-0133-7thin film lubricationelastohydrodynamic lubrication (EHL)film thickness predictionEHD analytical equationcentral film thicknessminimum film thickness |
| spellingShingle | 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 thin film lubrication elastohydrodynamic lubrication (EHL) film thickness prediction EHD analytical equation central film thickness minimum film thickness |
| title | On the relevance of analytical film thickness EHD equations for isothermal point contacts: Qualitative or quantitative predictions? |
| title_full | On the relevance of analytical film thickness EHD equations for isothermal point contacts: Qualitative or quantitative predictions? |
| title_fullStr | On the relevance of analytical film thickness EHD equations for isothermal point contacts: Qualitative or quantitative predictions? |
| title_full_unstemmed | On the relevance of analytical film thickness EHD equations for isothermal point contacts: Qualitative or quantitative predictions? |
| title_short | On the relevance of analytical film thickness EHD equations for isothermal point contacts: Qualitative or quantitative predictions? |
| title_sort | on the relevance of analytical film thickness ehd equations for isothermal point contacts qualitative or quantitative predictions |
| topic | thin film lubrication elastohydrodynamic lubrication (EHL) film thickness prediction EHD analytical equation central film thickness minimum film thickness |
| url | http://link.springer.com/article/10.1007/s40544-016-0133-7 |
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