Thermal Elastohydrodynamic Lubrication of Point Contacts Using a Newtonian/Generalized Newtonian Lubricant
The classical ElastoHydroDynamic (EHD) theory assumes a Newtonian lubricant and an isothermal operating regime. In reality, lubricating oils do not behave as perfect Newtonian fluids. Moreover, in most operating conditions of an engineering system, especially at high speeds, thermal effects are impo...
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2008
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| Online Access: | http://hdl.handle.net/10725/2193 http://dx.doi.org/10.1007/s11249-008-9310-9 http://link.springer.com/article/10.1007/s11249-008-9310-9 |
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| _version_ | 1864513457479483392 |
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| author | Habchi, W. |
| author2 | Eyheramendy, D. Bair, S. Vergne, P. Morales-Espejel, G. |
| author2_role | author author author author |
| author_facet | Habchi, W. Eyheramendy, D. Bair, S. Vergne, P. Morales-Espejel, G. |
| author_role | author |
| dc.creator.none.fl_str_mv | Habchi, W. Eyheramendy, D. Bair, S. Vergne, P. Morales-Espejel, G. |
| dc.date.none.fl_str_mv | 2008 2015-09-28T12:36:04Z 2015-09-28T12:36:04Z 2015-09-28 |
| dc.identifier.none.fl_str_mv | 1023-8883 http://hdl.handle.net/10725/2193 http://dx.doi.org/10.1007/s11249-008-9310-9 Habchi, W., Eyheramendy, D., Bair, S., Vergne, P., & Morales-Espejel, G. (2008). Thermal elastohydrodynamic lubrication of point contacts using a newtonian/generalized newtonian lubricant. Tribology Letters, 30(1), 41-52. http://link.springer.com/article/10.1007/s11249-008-9310-9 |
| dc.language.none.fl_str_mv | en |
| dc.relation.none.fl_str_mv | Tribology Letters |
| dc.rights.*.fl_str_mv | info:eu-repo/semantics/openAccess |
| dc.title.none.fl_str_mv | Thermal Elastohydrodynamic Lubrication of Point Contacts Using a Newtonian/Generalized Newtonian Lubricant |
| dc.type.none.fl_str_mv | Article info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article |
| description | The classical ElastoHydroDynamic (EHD) theory assumes a Newtonian lubricant and an isothermal operating regime. In reality, lubricating oils do not behave as perfect Newtonian fluids. Moreover, in most operating conditions of an engineering system, especially at high speeds, thermal effects are important and temperature can no longer be considered as constant throughout the system. This is one reason why there has always been a gap between numerical results and experimental data. This paper aims to show that this gap can be reduced by taking into consideration the heat generation that takes place in the contact and using appropriate rheological models. For this, a unique thermal ElastoHydrodynamic lubrication model is developed for both Newtonian and non-Newtonian lubricants. Pressure, film thickness and traction results are then compared to their equivalent isothermal results and experimental data. The agreement between thermal calculations and experiments reveals the necessity of considering thermal effects in EHD models. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | LAURepo_47a0d64f0fcd8884df032b0faccacc64 |
| identifier_str_mv | 1023-8883 Habchi, W., Eyheramendy, D., Bair, S., Vergne, P., & Morales-Espejel, G. (2008). Thermal elastohydrodynamic lubrication of point contacts using a newtonian/generalized newtonian lubricant. Tribology Letters, 30(1), 41-52. |
| language_invalid_str_mv | en |
| network_acronym_str | LAURepo |
| network_name_str | Lebanese American University repository |
| oai_identifier_str | oai:laur.lau.edu.lb:10725/2193 |
| publishDate | 2008 |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| spelling | Thermal Elastohydrodynamic Lubrication of Point Contacts Using a Newtonian/Generalized Newtonian LubricantHabchi, W.Eyheramendy, D.Bair, S.Vergne, P.Morales-Espejel, G.The classical ElastoHydroDynamic (EHD) theory assumes a Newtonian lubricant and an isothermal operating regime. In reality, lubricating oils do not behave as perfect Newtonian fluids. Moreover, in most operating conditions of an engineering system, especially at high speeds, thermal effects are important and temperature can no longer be considered as constant throughout the system. This is one reason why there has always been a gap between numerical results and experimental data. This paper aims to show that this gap can be reduced by taking into consideration the heat generation that takes place in the contact and using appropriate rheological models. For this, a unique thermal ElastoHydrodynamic lubrication model is developed for both Newtonian and non-Newtonian lubricants. Pressure, film thickness and traction results are then compared to their equivalent isothermal results and experimental data. The agreement between thermal calculations and experiments reveals the necessity of considering thermal effects in EHD models.PublishedN/A2015-09-28T12:36:04Z2015-09-28T12:36:04Z20082015-09-28Articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1023-8883http://hdl.handle.net/10725/2193http://dx.doi.org/10.1007/s11249-008-9310-9Habchi, W., Eyheramendy, D., Bair, S., Vergne, P., & Morales-Espejel, G. (2008). Thermal elastohydrodynamic lubrication of point contacts using a newtonian/generalized newtonian lubricant. Tribology Letters, 30(1), 41-52.http://link.springer.com/article/10.1007/s11249-008-9310-9enTribology Lettersinfo:eu-repo/semantics/openAccessoai:laur.lau.edu.lb:10725/21932019-07-29T08:37:04Z |
| spellingShingle | Thermal Elastohydrodynamic Lubrication of Point Contacts Using a Newtonian/Generalized Newtonian Lubricant Habchi, W. |
| status_str | publishedVersion |
| title | Thermal Elastohydrodynamic Lubrication of Point Contacts Using a Newtonian/Generalized Newtonian Lubricant |
| title_full | Thermal Elastohydrodynamic Lubrication of Point Contacts Using a Newtonian/Generalized Newtonian Lubricant |
| title_fullStr | Thermal Elastohydrodynamic Lubrication of Point Contacts Using a Newtonian/Generalized Newtonian Lubricant |
| title_full_unstemmed | Thermal Elastohydrodynamic Lubrication of Point Contacts Using a Newtonian/Generalized Newtonian Lubricant |
| title_short | Thermal Elastohydrodynamic Lubrication of Point Contacts Using a Newtonian/Generalized Newtonian Lubricant |
| title_sort | Thermal Elastohydrodynamic Lubrication of Point Contacts Using a Newtonian/Generalized Newtonian Lubricant |
| url | http://hdl.handle.net/10725/2193 http://dx.doi.org/10.1007/s11249-008-9310-9 http://link.springer.com/article/10.1007/s11249-008-9310-9 |