上海交通大学学报(自然版) ›› 2015, Vol. 49 ›› Issue (05): 626-632.
刘晓日,李国祥,胡玉平,白书战
收稿日期:
2014-08-11
基金资助:
国家高技术研究发展计划(863)项目(2014AA0415013),国家自然基金项目(51306105),内燃机燃烧学国家重点实验室开放课题(K20131)资助
LIU Xiaori,LI Guoxiang,HU Yuping,BAI Shuzhan
Received:
2014-08-11
摘要:
摘要: 基于多体动力学原理建立了考虑空穴效应和微观弹流润滑效应的连杆大头轴承热弹性流体动力混合润滑的计算模型,提出了穴蚀位置的识别方法,分析了轴承润滑状态并获得了轴承摩擦损失的热量分配方法.结果表明:连杆大头轴承处于混合润滑状态,其粗糙接触发生在上轴瓦顶部的两侧边缘;结合轴心轨迹、润滑油填充率、润滑油填充率的变化率和液动油膜压力变化率可以有效识别穴蚀位置;连杆大头轴承的平均摩擦功率为0.44 kW,最大粗糙摩擦功率仅为111.1 mW,但对其瞬时摩擦功率的监测并不能判断局部的润滑状态;大头轴承的润滑热量散失以热传导为主要方式.
中图分类号:
刘晓日,李国祥,胡玉平,白书战. 考虑空穴和微观弹流润滑效应的连杆大头轴承热弹流混合润滑分析[J]. 上海交通大学学报(自然版), 2015, 49(05): 626-632.
LIU Xiaori,LI Guoxiang,HU Yuping,BAI Shuzhan. Mixed Thermo-Elastohydrodynamic Lubrication of Connecting Rod Big End Bearing Considering Cavitation and Micro-Elastohydrodynamic Conditions[J]. Journal of Shanghai Jiaotong University, 2015, 49(05): 626-632.
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