Contact of Rough Surfaces: An Incremental Model Accounting for Strain Gradient Plasticity
In the contact of rough surfaces, most contact patches are at the scale of micrometers, and thus, their contact deformation can be dominated by the size-dependent plasticity. In this paper, we propose a new strategy to analyze the role of strain gradient plasticity in the contact response between a...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-03-01
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| Series: | Lubricants |
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| Online Access: | https://www.mdpi.com/2075-4442/11/3/140 |
| _version_ | 1797610568575614976 |
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| author | Chunyun Jiang Weike Yuan Yanbin Zheng Gangfeng Wang |
| author_facet | Chunyun Jiang Weike Yuan Yanbin Zheng Gangfeng Wang |
| author_sort | Chunyun Jiang |
| collection | DOAJ |
| description | In the contact of rough surfaces, most contact patches are at the scale of micrometers, and thus, their contact deformation can be dominated by the size-dependent plasticity. In this paper, we propose a new strategy to analyze the role of strain gradient plasticity in the contact response between a realistic rough surface and a rigid plane, which modifies the incremental contact model based on the mechanism-based gradient plasticity (MSGP) theory. For several different rough surfaces with their topography measured experimentally, the relations between applied load and real contact area are derived in a simple but effective way. It is found that strain gradient plasticity significantly increases the level of mean contact pressure. The hardening effect caused by strain gradient plasticity weakens somewhat as the contact area increases. Compared with previous methods, the present model might be more efficient and of wider application. |
| first_indexed | 2024-03-11T06:16:03Z |
| format | Article |
| id | doaj.art-31c7bd3eaa444ff5a54724bfe343f882 |
| institution | Directory Open Access Journal |
| issn | 2075-4442 |
| language | English |
| last_indexed | 2024-03-11T06:16:03Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Lubricants |
| spelling | doaj.art-31c7bd3eaa444ff5a54724bfe343f8822023-11-17T12:14:40ZengMDPI AGLubricants2075-44422023-03-0111314010.3390/lubricants11030140Contact of Rough Surfaces: An Incremental Model Accounting for Strain Gradient PlasticityChunyun Jiang0Weike Yuan1Yanbin Zheng2Gangfeng Wang3Department of Engineering Mechanics, SVL and MMML, Xi’an Jiaotong University, Xi’an 710049, ChinaDepartment of Engineering Mechanics, SVL and MMML, Xi’an Jiaotong University, Xi’an 710049, ChinaDepartment of Engineering Mechanics, SVL and MMML, Xi’an Jiaotong University, Xi’an 710049, ChinaDepartment of Engineering Mechanics, SVL and MMML, Xi’an Jiaotong University, Xi’an 710049, ChinaIn the contact of rough surfaces, most contact patches are at the scale of micrometers, and thus, their contact deformation can be dominated by the size-dependent plasticity. In this paper, we propose a new strategy to analyze the role of strain gradient plasticity in the contact response between a realistic rough surface and a rigid plane, which modifies the incremental contact model based on the mechanism-based gradient plasticity (MSGP) theory. For several different rough surfaces with their topography measured experimentally, the relations between applied load and real contact area are derived in a simple but effective way. It is found that strain gradient plasticity significantly increases the level of mean contact pressure. The hardening effect caused by strain gradient plasticity weakens somewhat as the contact area increases. Compared with previous methods, the present model might be more efficient and of wider application.https://www.mdpi.com/2075-4442/11/3/140rough surfacecontact mechanicsstrain gradient plasticitycontact area |
| spellingShingle | Chunyun Jiang Weike Yuan Yanbin Zheng Gangfeng Wang Contact of Rough Surfaces: An Incremental Model Accounting for Strain Gradient Plasticity Lubricants rough surface contact mechanics strain gradient plasticity contact area |
| title | Contact of Rough Surfaces: An Incremental Model Accounting for Strain Gradient Plasticity |
| title_full | Contact of Rough Surfaces: An Incremental Model Accounting for Strain Gradient Plasticity |
| title_fullStr | Contact of Rough Surfaces: An Incremental Model Accounting for Strain Gradient Plasticity |
| title_full_unstemmed | Contact of Rough Surfaces: An Incremental Model Accounting for Strain Gradient Plasticity |
| title_short | Contact of Rough Surfaces: An Incremental Model Accounting for Strain Gradient Plasticity |
| title_sort | contact of rough surfaces an incremental model accounting for strain gradient plasticity |
| topic | rough surface contact mechanics strain gradient plasticity contact area |
| url | https://www.mdpi.com/2075-4442/11/3/140 |
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