交变热载荷条件下的摩擦副热分析  

Thermal analysis of friction pairs under alternating thermal load

作　　者：田明[1] 魏巍[2] 郜庚虎 俞建卫[1] TIAN Ming;WEI Wei;GAO Genghu;YU Jianwei(School of Mechanical Engineering,Hefei University of Technology,Hefei 230009,China;School of Instrument Science and Opto-electronics Engineering,Hefei University of Technology,Hefei 230009,China)

机构地区：[1]合肥工业大学机械工程学院,安徽合肥230009 [2]合肥工业大学仪器科学与光电工程学院,安徽合肥230009

出　　处：《合肥工业大学学报（自然科学版）》2019年第12期1597-1601,1607,共6页Journal of Hefei University of Technology：Natural Science

基　　金：国家自然科学基金资助项目(51075114)

摘　　要：文章以往复滑动摩擦副为研究对象,分析了交变热载荷条件下的摩擦温度场演变规律。建立三维瞬态热分析模型并导入实验摩擦系数,以加载移动热流密度边界条件的方式等效摩擦生热效果,完成温度场的数值计算;同时结合红外热像仪和热电偶的测温对温度场进行分析。研究结果表明:将摩擦系数导入数值模型重构三维摩擦温度场的方法可行,工况参数和实时摩擦系数是影响摩擦温度场演变规律的主要因素。The evolution law of friction temperature field under alternating thermal load is analyzed by using the reciprocating sliding friction pair as the research object. Three-dimensional transient thermal model is established and the experimental friction coefficient is introduced to load moving heat flux boundary condition. The temperature field is analyzed by the infrared thermal imaging system and the thermocouple temperature measurement. The results show that the method of introducing the friction coefficient into the finite element model to reconstruct the 3 D temperature field is feasible. The main factors that affect the evolution and distribution of the friction temperature field include thermal physical parameters, rotational speed, load and real-time friction coefficient.

关 键 词：往复摩擦 交变热载荷 温度场 热流密度 红外热像仪 数值模型 

分 类 号：TH117.1[机械工程—机械设计及理论]