A model of mixed lubrication based on non-normalized discretization and its application for multilayered materials
This study presents a generalized model of mixed elastohydrodynamic lubrication, in which the dimensional Reynolds equation is discretized according to a modified differential scheme based on the full analysis of the pressure balance within the lubrication region. The model is capable of a wide rang...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2019
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/105402 http://hdl.handle.net/10220/48679 http://dx.doi.org/10.1115/1.4042074 |
| _version_ | 1826116756828061696 |
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| author | Dong, Qingbing Wang, Zhanjiang Zhu, Dong Meng, Fanming Xu, Lixin Zhou, Kun |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Dong, Qingbing Wang, Zhanjiang Zhu, Dong Meng, Fanming Xu, Lixin Zhou, Kun |
| author_sort | Dong, Qingbing |
| collection | NTU |
| description | This study presents a generalized model of mixed elastohydrodynamic lubrication, in which the dimensional Reynolds equation is discretized according to a modified differential scheme based on the full analysis of the pressure balance within the lubrication region. The model is capable of a wide range of lubrication regimes from fully hydrodynamic down to boundary lubrication, and both the steady-state and the time-dependent conditions can be considered. A simplified computational procedure is proposed for elliptical contacts without the ellipticity parameters specified. The evolution of lubrication behavior at startup and shutdown conditions is investigated and the transient effect of surface waviness is discussed. The model application is then extended to contacts of multilayered materials, and the effects of the layer stiffness and the fabrication methods on the stress fields and lubrication performance are analyzed. The conclusions may potentially provide some insightful information for the design and analysis of functional materials and their engineering structures. |
| first_indexed | 2024-10-01T04:16:31Z |
| format | Journal Article |
| id | ntu-10356/105402 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:16:31Z |
| publishDate | 2019 |
| record_format | dspace |
| spelling | ntu-10356/1054022019-12-06T21:50:36Z A model of mixed lubrication based on non-normalized discretization and its application for multilayered materials Dong, Qingbing Wang, Zhanjiang Zhu, Dong Meng, Fanming Xu, Lixin Zhou, Kun School of Mechanical and Aerospace Engineering Mixed Elastohydrodynamic Lubrication Transient Analysis DRNTU::Engineering::Mechanical engineering This study presents a generalized model of mixed elastohydrodynamic lubrication, in which the dimensional Reynolds equation is discretized according to a modified differential scheme based on the full analysis of the pressure balance within the lubrication region. The model is capable of a wide range of lubrication regimes from fully hydrodynamic down to boundary lubrication, and both the steady-state and the time-dependent conditions can be considered. A simplified computational procedure is proposed for elliptical contacts without the ellipticity parameters specified. The evolution of lubrication behavior at startup and shutdown conditions is investigated and the transient effect of surface waviness is discussed. The model application is then extended to contacts of multilayered materials, and the effects of the layer stiffness and the fabrication methods on the stress fields and lubrication performance are analyzed. The conclusions may potentially provide some insightful information for the design and analysis of functional materials and their engineering structures. 2019-06-12T06:52:44Z 2019-12-06T21:50:36Z 2019-06-12T06:52:44Z 2019-12-06T21:50:36Z 2019 Journal Article Dong, Q., Wang, Z., Zhu, D., Meng, F., Xu, L., & Zhou, K. (2019). A model of mixed lubrication based on non-normalized discretization and its application for multilayered materials. Journal of Tribology, 141(4), 042101-. doi:10.1115/1.4042074 0742-4787 https://hdl.handle.net/10356/105402 http://hdl.handle.net/10220/48679 http://dx.doi.org/10.1115/1.4042074 en Journal of Tribology © 2019 American Society of Mechanical Engineers. All rights reserved. |
| spellingShingle | Mixed Elastohydrodynamic Lubrication Transient Analysis DRNTU::Engineering::Mechanical engineering Dong, Qingbing Wang, Zhanjiang Zhu, Dong Meng, Fanming Xu, Lixin Zhou, Kun A model of mixed lubrication based on non-normalized discretization and its application for multilayered materials |
| title | A model of mixed lubrication based on non-normalized discretization and its application for multilayered materials |
| title_full | A model of mixed lubrication based on non-normalized discretization and its application for multilayered materials |
| title_fullStr | A model of mixed lubrication based on non-normalized discretization and its application for multilayered materials |
| title_full_unstemmed | A model of mixed lubrication based on non-normalized discretization and its application for multilayered materials |
| title_short | A model of mixed lubrication based on non-normalized discretization and its application for multilayered materials |
| title_sort | model of mixed lubrication based on non normalized discretization and its application for multilayered materials |
| topic | Mixed Elastohydrodynamic Lubrication Transient Analysis DRNTU::Engineering::Mechanical engineering |
| url | https://hdl.handle.net/10356/105402 http://hdl.handle.net/10220/48679 http://dx.doi.org/10.1115/1.4042074 |
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