| JI Jing-hu,ZHOU Ying-chao,TIAN Peng-lin,CHEN Tian-yang,HE Yu-yang.Numerical Analysis of Hydrodynamic Lubrication of Partially Textured Surfaces with Dimples for Journal Bearing[J],50(10):214-220, 278 |
| Numerical Analysis of Hydrodynamic Lubrication of Partially Textured Surfaces with Dimples for Journal Bearing |
| Received:December 23, 2020 Revised:March 27, 2021 |
| View Full Text View/Add Comment Download reader |
| DOI：10.16490/j.cnki.issn.1001-3660.2021.10.020 |
| KeyWord:hydrodynamic lubrication surface texture journal bearing load capacity |
| Author | Institution |
| JI Jing-hu |
Jiangsu University, Zhenjiang , China |
| ZHOU Ying-chao |
Jiangsu University, Zhenjiang , China |
| TIAN Peng-lin |
Jiangsu University, Zhenjiang , China |
| CHEN Tian-yang |
Jiangsu University, Zhenjiang , China |
| HE Yu-yang |
Jiangsu University, Zhenjiang , China |
|
| Hits: |
| Download times: |
| Abstract: |
| The work aims to investigate the textured surface with dimples on hydrodynamic lubrication performance of journal bearing surface. A theoretical model, basing on Reynolds boundary condition and Reynolds equation, on hydrodynamic lubrication of textured surface with dimples for journal bearing considered is presented. The influence on the hydrodynamic lubrication property of textured surface with dimples is analyzed via the pressure distribution and load capacity of film achieved by Gauss-Seidel relaxation iteration method. The influence of dimples geometric parameters and distribution law on film bearing capacity is discussed. The numerical solution of the theoretical model established in this paper is less error than that of the classical theory, which can effectively analyze the hydrodynamic lubrication characteristics of bearings. When the eccentricity is large, the increase range of friction is also larger. Dimple texture treatment in the bearing loading area can significantly reduce the friction force, and with the increase of the depth of the dimple, the friction force decreases, so it can be seen that the dimple plays a role of lubrication and friction reduction. The film bearing capacity increases with the increase of eccentricity. The film pressure in the non-bearing zone can be improved through the "wedge effect" of the dimple texture, and the optimal dimple depth can make the bearing reach the optimal state of hydrodynamic lubrication. The friction increases with the increase of area ratio, especially in the case of large eccentricity ratio, the lubrication antifriction effect is more obvious, and the area ratio has little influence on the bearing capacity of oil film. The texture is arranged in different areas of journal bearing. When the texture is completely in the lower half tile, the texture can significantly increase the oil film thickness, generate oil film pressure, effectively reduce friction, and improve the bearing capacity. Reasonable design of eccentricity, appropriate texture parameters and distribution position can make hydrodynamic lubrication effect best. |
| Close |
|
|
|