| 微造型活塞环表面的润滑性能数值分析 |
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| 引用本文： | 符永宏,张华伟,纪敬虎,华希俊.微造型活塞环表面的润滑性能数值分析[J].内燃机学报,2009,27(2). |
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| 作者姓名： | 符永宏 张华伟 纪敬虎 华希俊 |
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| 作者单位： | 江苏大学机械工程学院,江苏镇江,212013
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| 基金项目： | 国家自然科学基会资助项目，江苏省高技术重大项目，江苏省"六大人才高峰"项目，中国博士后科学基金，江苏省博士后基金 |
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| 摘 要： | 基于活塞环表面激光微造型的实际形貌,建立活塞环表面具有规则微观抛物面凹腔结构的润滑理论模型,采用变异多重网格法对理论模型进行数值求解,获取表面微观形貌几何参数对润滑性能的影响规律.结果表明:通过在活塞环表面造型,会产生明显的流体动压力.微观凹腔的面积占有率S.对膜厚及无量纲平均摩擦力的影响不明显,当S.从5%变化到60%时,无量纲平均摩擦力改变了18.6%.相反,微观凹腔的深度^,影响显著,存在的最佳深度为2～7 μm,当hp8μm时,无量纲平均摩擦力增大,膜厚变薄,且一个周期内的膜厚曲线变化不规则.
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| 关 键 词： | 激光微造型 活塞环 雷诺方程 变异多重网格法 润滑性能 |
Numerical Analysis on the Lubrication Performance of Piston Ring by Surface Micro-Texturing |
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| FU Yong-hong,ZHANG Hua-wei,JI Jing-hu,HUA Xi-jun.Numerical Analysis on the Lubrication Performance of Piston Ring by Surface Micro-Texturing[J].Transactions of Csice,2009,27(2). |
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| Authors: | FU Yong-hong ZHANG Hua-wei JI Jing-hu HUA Xi-jun |
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| Affiliation: | School of Mechanical Engineering;Jiangsu University;Zhenjiang 212013;China |
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| Abstract: | Based on the real structure of the LST Piston ring,a lubrication model was developed for the piston ring with regular microstructure in the form of paraboloid profile dimples.The influence of surface micro-geometry shape parameters on piston ring lubrication performance was obtained by solving the dimensionless Reynolds equation with modified multi-grid method.The results show that piston ring through LST can efficiently produce hydrodynamic pressure.Meanwhile,it was also found that the area density of the ... |
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| Keywords: | Laser micro-texturing Piston ring Reynolds equation Modified multi-grid method Lubrica-tion performance |
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