Combined effect of boundary layer formation and surface smoothing on friction and wear rate of lubricated point contacts during normal running-in processes
Abstract The combined effect of boundary layer formation and surface smoothing on friction and wear rate of metallic surfaces under lubricated point contact condition was investigated. The double trend of friction coefficient variations was revealed during running-in and sub-running-in processes. Th...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2018-09-01
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| Series: | Friction |
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| Online Access: | http://link.springer.com/article/10.1007/s40544-018-0228-4 |
| _version_ | 1818416062133174272 |
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| author | Yazhao Zhang Alexander Kovalev Yonggang Meng |
| author_facet | Yazhao Zhang Alexander Kovalev Yonggang Meng |
| author_sort | Yazhao Zhang |
| collection | DOAJ |
| description | Abstract The combined effect of boundary layer formation and surface smoothing on friction and wear rate of metallic surfaces under lubricated point contact condition was investigated. The double trend of friction coefficient variations was revealed during running-in and sub-running-in processes. The evolution of surface topography was measured on-site using white-light interference profilometer and analyzed using bearing area curves. Comprehensive theoretical equations that explicitly express the contributions of boundary friction, adhesive friction and wear have been derived, and results obtained by these equations were compared with experimental observations. It is concluded that the theoretical models are quantitatively adequate to describe the combined effect of surface smoothing due to mechanical wear and formation of boundary films on the changes in friction and wear rate during normal running-in processes. |
| first_indexed | 2024-12-14T11:44:54Z |
| format | Article |
| id | doaj.art-00f03fd95e8b4d6cbb7a72f9af93ac50 |
| institution | Directory Open Access Journal |
| issn | 2223-7690 2223-7704 |
| language | English |
| last_indexed | 2024-12-14T11:44:54Z |
| publishDate | 2018-09-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Friction |
| spelling | doaj.art-00f03fd95e8b4d6cbb7a72f9af93ac502022-12-21T23:02:38ZengSpringerOpenFriction2223-76902223-77042018-09-016327428810.1007/s40544-018-0228-4Combined effect of boundary layer formation and surface smoothing on friction and wear rate of lubricated point contacts during normal running-in processesYazhao Zhang0Alexander Kovalev1Yonggang Meng2State Key Laboratory of Tribology, Tsinghua UniversityState Key Laboratory of Tribology, Tsinghua UniversityState Key Laboratory of Tribology, Tsinghua UniversityAbstract The combined effect of boundary layer formation and surface smoothing on friction and wear rate of metallic surfaces under lubricated point contact condition was investigated. The double trend of friction coefficient variations was revealed during running-in and sub-running-in processes. The evolution of surface topography was measured on-site using white-light interference profilometer and analyzed using bearing area curves. Comprehensive theoretical equations that explicitly express the contributions of boundary friction, adhesive friction and wear have been derived, and results obtained by these equations were compared with experimental observations. It is concluded that the theoretical models are quantitatively adequate to describe the combined effect of surface smoothing due to mechanical wear and formation of boundary films on the changes in friction and wear rate during normal running-in processes.http://link.springer.com/article/10.1007/s40544-018-0228-4running-inbearing area curvesfriction modelingwear modelingmixed lubrication |
| spellingShingle | Yazhao Zhang Alexander Kovalev Yonggang Meng Combined effect of boundary layer formation and surface smoothing on friction and wear rate of lubricated point contacts during normal running-in processes Friction running-in bearing area curves friction modeling wear modeling mixed lubrication |
| title | Combined effect of boundary layer formation and surface smoothing on friction and wear rate of lubricated point contacts during normal running-in processes |
| title_full | Combined effect of boundary layer formation and surface smoothing on friction and wear rate of lubricated point contacts during normal running-in processes |
| title_fullStr | Combined effect of boundary layer formation and surface smoothing on friction and wear rate of lubricated point contacts during normal running-in processes |
| title_full_unstemmed | Combined effect of boundary layer formation and surface smoothing on friction and wear rate of lubricated point contacts during normal running-in processes |
| title_short | Combined effect of boundary layer formation and surface smoothing on friction and wear rate of lubricated point contacts during normal running-in processes |
| title_sort | combined effect of boundary layer formation and surface smoothing on friction and wear rate of lubricated point contacts during normal running in processes |
| topic | running-in bearing area curves friction modeling wear modeling mixed lubrication |
| url | http://link.springer.com/article/10.1007/s40544-018-0228-4 |
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