含磨屑粗糙表面接触滑动摩擦副温度场的计算  

The Study on the Contact Temperature Fields of Sliding Friction Pairs with Debris Containing

作　　者：程西云[1] 蒋松[1] 邓小桅[1] 韦云隆[1] 周银生[2] 

机构地区：[1]重庆大学机械传动国家重点实验室,重庆400044 [2]浙江大学机械系机械原理与零件教研室,杭州310027

出　　处：《重庆大学学报（自然科学版）》2000年第3期23-27,共5页Journal of Chongqing University

基　　金：国家教育部博士学科点基金资助项目! ( 943 3 5 0 5 )

摘　　要：接触温度是评价摩擦副工作性能好坏的一个重要因素 ,对粗糙表面、特别是含磨屑粗糙表面接触温度场求解尚缺乏深入研究。介绍了粗糙表面及含磨屑粗糙表面线接触滑动摩擦副接触温度场的求解过程及方法 ,分析了光滑表面、粗糙表面及含磨屑粗糙表面接触温度场分布 ,探讨了表面接触温度对滑动摩擦副胶合及咬死的影响。结果表明 :粗糙表面温度场较光滑接触表面温度场有明显的提高 ,在粗糙度影响系数为 0 .1、0 .5时 ,接触区温度分别增加 14 %和 10 3% ;磨屑着床后 ,接触区局部温度将进一步升高。对于 4 5#钢滑动副 ,考虑局部表面膜破裂后 ,磨屑着床点温度可以达到滑动副材料的熔焊温度。Contact temperature is one important working proprieties of friction pairs,there are no study on the contact temperature fields of rough surface contact at present.The methods of calculating the contact temperature fields are presented.On the basis of taking rough surface and debris effects into account,the temperature fields of sliding friction pairs are calculated.And the effect of temperature on the sliding friction pairs scuffing proprieties is discussed.The result shows that there are obvious enbance of the contact temperature comparing the smooth surface contact to the rough surface contact.If the coefficient of rough influence equal 0.1 and 0.5,the contact temperature will enhance by 14% and 103%.The contact temperature will enhance once again if the debris embed in the surface.If the material of the friction pairs is 45 # steel,Supposing the surface film has been destroyed,the temperature of debris embed point will come to the material welding temperature.

关 键 词：滑动摩擦副 温度场 接触温度 含磨屑粗糙表面 

分 类 号：TH117.1[机械工程—机械设计及理论]