Granular Collision Lubrication: Experimental Investigation and Comparison to TheorySource: Journal of Tribology:;2007:;volume( 129 ):;issue: 004::page 923DOI: 10.1115/1.2768613Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: An experimental investigation of the friction and lift characteristics of granular lubrication is presented. Experiments are carried out to demonstrate the vertical displacement (lift) observed in an annular shear cell apparatus. Results are presented for the friction coefficient as a function of the rotational speed and the applied load for several surface roughness combinations. Simulations of the kinetic theory for the granular material are performed and compared to the experimental results. The experiments provide an evidence for the formation of granular lift between two disks undergoing sliding motion.
keyword(s): Flow (Dynamics) , Friction , Lubrication , Granular materials , Surface roughness , Stress , Collisions (Physics) , Shear (Mechanics) , Disks , Displacement , Force AND Motion ,
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| contributor author | Karim N. Elkholy | |
| contributor author | M. M. Khonsari | |
| date accessioned | 2017-05-09T00:25:52Z | |
| date available | 2017-05-09T00:25:52Z | |
| date copyright | October, 2007 | |
| date issued | 2007 | |
| identifier issn | 0742-4787 | |
| identifier other | JOTRE9-28753#923_1.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/136876 | |
| description abstract | An experimental investigation of the friction and lift characteristics of granular lubrication is presented. Experiments are carried out to demonstrate the vertical displacement (lift) observed in an annular shear cell apparatus. Results are presented for the friction coefficient as a function of the rotational speed and the applied load for several surface roughness combinations. Simulations of the kinetic theory for the granular material are performed and compared to the experimental results. The experiments provide an evidence for the formation of granular lift between two disks undergoing sliding motion. | |
| publisher | The American Society of Mechanical Engineers (ASME) | |
| title | Granular Collision Lubrication: Experimental Investigation and Comparison to Theory | |
| type | Journal Paper | |
| journal volume | 129 | |
| journal issue | 4 | |
| journal title | Journal of Tribology | |
| identifier doi | 10.1115/1.2768613 | |
| journal fristpage | 923 | |
| journal lastpage | 932 | |
| identifier eissn | 1528-8897 | |
| keywords | Flow (Dynamics) | |
| keywords | Friction | |
| keywords | Lubrication | |
| keywords | Granular materials | |
| keywords | Surface roughness | |
| keywords | Stress | |
| keywords | Collisions (Physics) | |
| keywords | Shear (Mechanics) | |
| keywords | Disks | |
| keywords | Displacement | |
| keywords | Force AND Motion | |
| tree | Journal of Tribology:;2007:;volume( 129 ):;issue: 004 | |
| contenttype | Fulltext |