A Mechanics Model for Contact with Rough Surface Considering the Interaction of Micro-Asperity Bodies
In order to evaluate contact characteristics, a modified contact model was proposed considering the deformation characteristics of asperity bodies, and the variation rules of wear rate with fractal dimension, material property constant and debris probability were established. The results show that t...
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-02-01
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| Series: | Lubricants |
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| Online Access: | https://www.mdpi.com/2075-4442/13/3/96 |
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| author | Yazhou Mao Qingxin Hu Yingying Yu Shaolin Shi Jiaming Pei Zichen Li Linyuan Wang |
| author_facet | Yazhou Mao Qingxin Hu Yingying Yu Shaolin Shi Jiaming Pei Zichen Li Linyuan Wang |
| author_sort | Yazhou Mao |
| collection | DOAJ |
| description | In order to evaluate contact characteristics, a modified contact model was proposed considering the deformation characteristics of asperity bodies, and the variation rules of wear rate with fractal dimension, material property constant and debris probability were established. The results show that the actual contact area increases with an increase in load when the surface topography is constant, whereas the contact area decreases with an increase in characteristic scale coefficient if the fractal dimension or load is constant. For running-in wear, the wear rate increases with an increase in surface profile parameters under the same contact area. In addition, the wear rate increases with an increase in actual contact area when the surface profile parameter is constant. Regarding abrasive wear, the wear rate is the smallest when the fractal dimension is 1.6. The wear rate increases with an increase in contact area under the same characteristic scale coefficient, but decreases with an increase in the characteristic scale coefficient under the same contact area, and the smaller the material constant and the larger the probability constant, the higher the wear rate. The establishment of this model provides a basis for further study of the tribological properties of the contact surface. |
| format | Article |
| id | doaj-art-6aa2247ab0b545a18f45ed70fbe2ad65 |
| institution | DOAJ |
| issn | 2075-4442 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Lubricants |
| spelling | doaj-art-6aa2247ab0b545a18f45ed70fbe2ad652025-08-20T02:42:21ZengMDPI AGLubricants2075-44422025-02-011339610.3390/lubricants13030096A Mechanics Model for Contact with Rough Surface Considering the Interaction of Micro-Asperity BodiesYazhou Mao0Qingxin Hu1Yingying Yu2Shaolin Shi3Jiaming Pei4Zichen Li5Linyuan Wang6School of Mechanical Engineering, Henan University of Engineering, Zhengzhou 4511911, ChinaSchool of Mechanical Engineering, Henan University of Engineering, Zhengzhou 4511911, ChinaSchool of Mechanical Engineering, Henan University of Engineering, Zhengzhou 4511911, ChinaSchool of Mechanical Engineering, Henan University of Engineering, Zhengzhou 4511911, ChinaSchool of Mechanical Engineering, Henan University of Engineering, Zhengzhou 4511911, ChinaSchool of Mechanical Engineering, Henan University of Engineering, Zhengzhou 4511911, ChinaSchool of Mechanical Engineering, Henan University of Engineering, Zhengzhou 4511911, ChinaIn order to evaluate contact characteristics, a modified contact model was proposed considering the deformation characteristics of asperity bodies, and the variation rules of wear rate with fractal dimension, material property constant and debris probability were established. The results show that the actual contact area increases with an increase in load when the surface topography is constant, whereas the contact area decreases with an increase in characteristic scale coefficient if the fractal dimension or load is constant. For running-in wear, the wear rate increases with an increase in surface profile parameters under the same contact area. In addition, the wear rate increases with an increase in actual contact area when the surface profile parameter is constant. Regarding abrasive wear, the wear rate is the smallest when the fractal dimension is 1.6. The wear rate increases with an increase in contact area under the same characteristic scale coefficient, but decreases with an increase in the characteristic scale coefficient under the same contact area, and the smaller the material constant and the larger the probability constant, the higher the wear rate. The establishment of this model provides a basis for further study of the tribological properties of the contact surface.https://www.mdpi.com/2075-4442/13/3/96mechanics modelasperity bodyrough surfacecontact characteristics |
| spellingShingle | Yazhou Mao Qingxin Hu Yingying Yu Shaolin Shi Jiaming Pei Zichen Li Linyuan Wang A Mechanics Model for Contact with Rough Surface Considering the Interaction of Micro-Asperity Bodies Lubricants mechanics model asperity body rough surface contact characteristics |
| title | A Mechanics Model for Contact with Rough Surface Considering the Interaction of Micro-Asperity Bodies |
| title_full | A Mechanics Model for Contact with Rough Surface Considering the Interaction of Micro-Asperity Bodies |
| title_fullStr | A Mechanics Model for Contact with Rough Surface Considering the Interaction of Micro-Asperity Bodies |
| title_full_unstemmed | A Mechanics Model for Contact with Rough Surface Considering the Interaction of Micro-Asperity Bodies |
| title_short | A Mechanics Model for Contact with Rough Surface Considering the Interaction of Micro-Asperity Bodies |
| title_sort | mechanics model for contact with rough surface considering the interaction of micro asperity bodies |
| topic | mechanics model asperity body rough surface contact characteristics |
| url | https://www.mdpi.com/2075-4442/13/3/96 |
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