Ridge geometry effect on the behavior of elastohydrodynamic lubrication of point contact problem
A numerical solution is presented to investigate the influence of the geometry and the amplitude of the transverse ridge on the characteristics of elastohydrodynamic lubrication for point contact problem under steady state condition. Several shapes of ridges with different amplitudes are used in the...
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| Format: | Article |
| Language: | English |
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Polish Academy of Sciences
2020-12-01
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| Series: | Archive of Mechanical Engineering |
| Subjects: | |
| Online Access: | https://journals.pan.pl/Content/115036/PDF/AME_2020_131704.pdf |
| _version_ | 1818489675433639936 |
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| author | Mohamed F. Abd Al-Samieh |
| author_facet | Mohamed F. Abd Al-Samieh |
| author_sort | Mohamed F. Abd Al-Samieh |
| collection | DOAJ |
| description | A numerical solution is presented to investigate the influence of the geometry and the amplitude of the transverse ridge on the characteristics of elastohydrodynamic lubrication for point contact problem under steady state condition. Several shapes of ridges with different amplitudes are used in the stationary case, such as flattop ridge, cosine wave ridge and sharp ridge of triangular shape. Results of film thickness and pressure distributions of the aforementioned ridge feature are presented at different locations through an elastohydrodynamically lubricated contact zone for different amplitude of the ridge. Simulations were performed using the Newton-Raphson iteration technique to solve the Reynolds equation. The numerical results reveal that, to predict optimum solution for lubricated contact problem with artificial surface roughness, the geometrical characteristics of the ridge should have profiles with smooth transitions such as those of a cosine wave shape with relatively low amplitude to reduce pressure spike and therefore cause the reduction in the film thickness. The position of the location of the ridge across the contact zone and the amplitude of the ridge play an important role in the formation of lubricant film thickness and therefore determine the pressure distribution through the contact zone. |
| first_indexed | 2024-12-10T17:06:48Z |
| format | Article |
| id | doaj.art-c8419acc323642d5a2ca34dcd7316605 |
| institution | Directory Open Access Journal |
| issn | 2300-1895 |
| language | English |
| last_indexed | 2024-12-10T17:06:48Z |
| publishDate | 2020-12-01 |
| publisher | Polish Academy of Sciences |
| record_format | Article |
| series | Archive of Mechanical Engineering |
| spelling | doaj.art-c8419acc323642d5a2ca34dcd73166052022-12-22T01:40:26ZengPolish Academy of SciencesArchive of Mechanical Engineering2300-18952020-12-01vol. 67No 4491508https://doi.org/10.24425/ame.2020.131704Ridge geometry effect on the behavior of elastohydrodynamic lubrication of point contact problemMohamed F. Abd Al-Samieh0Mechanical Design & Production Department, Military Technical College, Cairo, Egypt.A numerical solution is presented to investigate the influence of the geometry and the amplitude of the transverse ridge on the characteristics of elastohydrodynamic lubrication for point contact problem under steady state condition. Several shapes of ridges with different amplitudes are used in the stationary case, such as flattop ridge, cosine wave ridge and sharp ridge of triangular shape. Results of film thickness and pressure distributions of the aforementioned ridge feature are presented at different locations through an elastohydrodynamically lubricated contact zone for different amplitude of the ridge. Simulations were performed using the Newton-Raphson iteration technique to solve the Reynolds equation. The numerical results reveal that, to predict optimum solution for lubricated contact problem with artificial surface roughness, the geometrical characteristics of the ridge should have profiles with smooth transitions such as those of a cosine wave shape with relatively low amplitude to reduce pressure spike and therefore cause the reduction in the film thickness. The position of the location of the ridge across the contact zone and the amplitude of the ridge play an important role in the formation of lubricant film thickness and therefore determine the pressure distribution through the contact zone.https://journals.pan.pl/Content/115036/PDF/AME_2020_131704.pdfsurface roughnesstransverse ridgeelastohydrodynamicsamplitude |
| spellingShingle | Mohamed F. Abd Al-Samieh Ridge geometry effect on the behavior of elastohydrodynamic lubrication of point contact problem Archive of Mechanical Engineering surface roughness transverse ridge elastohydrodynamics amplitude |
| title | Ridge geometry effect on the behavior of elastohydrodynamic lubrication of point contact problem |
| title_full | Ridge geometry effect on the behavior of elastohydrodynamic lubrication of point contact problem |
| title_fullStr | Ridge geometry effect on the behavior of elastohydrodynamic lubrication of point contact problem |
| title_full_unstemmed | Ridge geometry effect on the behavior of elastohydrodynamic lubrication of point contact problem |
| title_short | Ridge geometry effect on the behavior of elastohydrodynamic lubrication of point contact problem |
| title_sort | ridge geometry effect on the behavior of elastohydrodynamic lubrication of point contact problem |
| topic | surface roughness transverse ridge elastohydrodynamics amplitude |
| url | https://journals.pan.pl/Content/115036/PDF/AME_2020_131704.pdf |
| work_keys_str_mv | AT mohamedfabdalsamieh ridgegeometryeffectonthebehaviorofelastohydrodynamiclubricationofpointcontactproblem |