| 考虑热变形和弹性变形的活塞二阶运动数值分析 |
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| 引用本文： | 王庆生,刘焜.考虑热变形和弹性变形的活塞二阶运动数值分析[J].合肥工业大学学报(自然科学版),2011,34(6):801-804,816. |
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| 作者姓名： | 王庆生 刘焜 |
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| 作者单位： | 合肥工业大学机械与汽车工程学院,安徽合肥,230009 |
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| 基金项目： | 国家高技术研究发展计划(863计划)资助项目(2007AA04Z119) |
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| 摘 要： | 文章建立了内燃机活塞裙部混合润滑数学模型,建模时综合考虑了活塞裙部外形轮廓、表面波度和粗糙度、活塞裙部和缸套的热变形和弹性变形以及裙部润滑摩擦状况等因素,分析了工作状态下热、弹性变形对活塞二阶运动轨迹、最小油膜厚度以及摩擦力的影响.结果表明相对于冷态,工作状态下活塞二阶运动幅度和摩擦力有所减少,而最小油膜厚度则有所增加...
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| 关 键 词： | 活塞 热变形 弹性变形 二阶运动 |
A numerical analysis for secondary motion of piston considering thermal deformation and elastic deformation |
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| WANG Qing-sheng,LIU Kun.A numerical analysis for secondary motion of piston considering thermal deformation and elastic deformation[J].Journal of Hefei University of Technology(Natural Science),2011,34(6):801-804,816. |
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| Authors: | WANG Qing-sheng LIU Kun |
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| Institution: | WANG Qing-sheng,LIU Kun(School of Machinery and Automobile Engineering,Hefei University of Technology,Hefei 230009,China) |
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| Abstract: | A mathematical model for piston skirts in mixed lubrication is developed in this paper.The model takes into account the factors that affect the lubrication characteristics of piston skirt,such as the topography of piston skirt surface waviness and roughness,thermal and elastic deformations of piston skirt and cylinder bore,and the lubrication and friction of piston skirt.The effects of thermal and elastic deformations on entire piston secondary motion trajectory,minimum film thickness,and total friction for... |
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| Keywords: | piston thermal deformation elastic deformation secondary motion |
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