Experimental study on nonlinear friction behavior of granular flow lubrication
Solid granules have good lubrication performance and load-bearing capacity, which has been concerned by researchers. However, the correlation mechanism between lubrication performance and granular medium dynamics is hardly focused on. In this study, the characteristics of two parallel friction pairs...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-07-01
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| Series: | Results in Physics |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2211379722003151 |
| _version_ | 1828334990710013952 |
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| author | Fanjing Meng Minghua Pang Shaozhen Hua Huabo Liu Lijie Ma |
| author_facet | Fanjing Meng Minghua Pang Shaozhen Hua Huabo Liu Lijie Ma |
| author_sort | Fanjing Meng |
| collection | DOAJ |
| description | Solid granules have good lubrication performance and load-bearing capacity, which has been concerned by researchers. However, the correlation mechanism between lubrication performance and granular medium dynamics is hardly focused on. In this study, the characteristics of two parallel friction pairs lubricated by the granular medium are experimentally investigated to study the nonlinear friction behavior during this process. The experimental results showed that the fluctuation behavior of friction force and friction coefficient with time shows a more flat nonlinear trend with the increase of the shear velocity and the pressure load. The discrete element simulation results corresponding to the experiment revealed that the change of nonlinear behavior of measured friction and friction coefficient is closely related to the evolution of force chains and dynamic characteristics of this granular flow lubrication system. The shear dilatancy amplitude of this granular flow lubrication system decreases obviously with the increase of the shear velocity and the pressure load. The flow states of granular medium is the main reason influencing the nonlinearity of shear gap. This study reveals the key factors affecting the friction nonlinearity and provides an evidence for the formation of granular shear dilatancy between two friction pairs lubricated by granular medium. |
| first_indexed | 2024-04-13T21:39:36Z |
| format | Article |
| id | doaj.art-28ae0e2f4ec0497f80248961db67c1fd |
| institution | Directory Open Access Journal |
| issn | 2211-3797 |
| language | English |
| last_indexed | 2024-04-13T21:39:36Z |
| publishDate | 2022-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Physics |
| spelling | doaj.art-28ae0e2f4ec0497f80248961db67c1fd2022-12-22T02:28:48ZengElsevierResults in Physics2211-37972022-07-0138105598Experimental study on nonlinear friction behavior of granular flow lubricationFanjing Meng0Minghua Pang1Shaozhen Hua2Huabo Liu3Lijie Ma4School of Mechanical Engineering, Henan Institute of Technology, Xinxiang 453003, PR China; Corresponding author.School of Mechanical and Electrical Engineering, Henan Institute of Science and Technology, Xinxiang 453003, PR ChinaSchool of Mechanical Engineering, Henan Institute of Technology, Xinxiang 453003, PR ChinaSchool of Mechanical Engineering, Henan Institute of Technology, Xinxiang 453003, PR ChinaSchool of Mechanical and Electrical Engineering, Henan Institute of Science and Technology, Xinxiang 453003, PR ChinaSolid granules have good lubrication performance and load-bearing capacity, which has been concerned by researchers. However, the correlation mechanism between lubrication performance and granular medium dynamics is hardly focused on. In this study, the characteristics of two parallel friction pairs lubricated by the granular medium are experimentally investigated to study the nonlinear friction behavior during this process. The experimental results showed that the fluctuation behavior of friction force and friction coefficient with time shows a more flat nonlinear trend with the increase of the shear velocity and the pressure load. The discrete element simulation results corresponding to the experiment revealed that the change of nonlinear behavior of measured friction and friction coefficient is closely related to the evolution of force chains and dynamic characteristics of this granular flow lubrication system. The shear dilatancy amplitude of this granular flow lubrication system decreases obviously with the increase of the shear velocity and the pressure load. The flow states of granular medium is the main reason influencing the nonlinearity of shear gap. This study reveals the key factors affecting the friction nonlinearity and provides an evidence for the formation of granular shear dilatancy between two friction pairs lubricated by granular medium.http://www.sciencedirect.com/science/article/pii/S2211379722003151Granular flow lubricationDiscrete element methodFriction nonlinearityForce chainShear dilatancy |
| spellingShingle | Fanjing Meng Minghua Pang Shaozhen Hua Huabo Liu Lijie Ma Experimental study on nonlinear friction behavior of granular flow lubrication Results in Physics Granular flow lubrication Discrete element method Friction nonlinearity Force chain Shear dilatancy |
| title | Experimental study on nonlinear friction behavior of granular flow lubrication |
| title_full | Experimental study on nonlinear friction behavior of granular flow lubrication |
| title_fullStr | Experimental study on nonlinear friction behavior of granular flow lubrication |
| title_full_unstemmed | Experimental study on nonlinear friction behavior of granular flow lubrication |
| title_short | Experimental study on nonlinear friction behavior of granular flow lubrication |
| title_sort | experimental study on nonlinear friction behavior of granular flow lubrication |
| topic | Granular flow lubrication Discrete element method Friction nonlinearity Force chain Shear dilatancy |
| url | http://www.sciencedirect.com/science/article/pii/S2211379722003151 |
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