Work hardening of adhesively bonded pure copper single lap joints  

作　　者：郑小玲 熊惟皓 郑勇 余海洲 游敏 刘文俊 

机构地区：[1]College of Mechanical and Material Engineering, China Three Gorges University, Yichang 443002, China [2]School of Materials Sciences and Engineering, Huazhong University of Sciences and Technology, Wuhan 430074,China [3]College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

出　　处：《中国有色金属学会会刊：英文版》2005年第S3期365-368,共4页Transactions of Nonferrous Metals Society of China

基　　金：Project(2003Z001)supportedbytheMajorResearchProgramsofScienceandTechnologyofHubeiProvincialDepartmentofEducation,China

摘　　要：To explain the reason why work hardening occurs in epoxy adhesive bonded zone of pure copper adherends after tensile shear strength testing, an elasto-plastic finite element model was established to analyze the effect of different adherends thickness of 2mm and 4mm on the shear strength as well as the level of work hardening in copper adherends of single lap joint. The numerical simulation results show that the axial or equivalent stress overrun the yield strength of the pure copper adherend is the main reason why the work hardening occurs on the bonded zone of the adherends after the shear strength testing. The elasto-plastic finite element simulation results are agreed with the experimental ones. The thicker its adherends are, the more serious the work hardening is.To explain the reason why work hardening occurs in epoxy adhesive bonded zone of pure copper adherends after tensile shear strength testing, an elasto-plastic finite element model was established to analyze the effect of different adherends thickness of 2mm and 4mm on the shear strength as well as the level of work hardening in copper adherends of single lap joint. The numerical simulation results show that the axial or equivalent stress overrun the yield strength of the pure copper adherend is the main reason why the work hardening occurs on the bonded zone of the adherends after the shear strength testing. The elasto-plastic finite element simulation results are agreed with the experimental ones. The thicker its adherends are, the more serious the work hardening is.

关 键 词：EPOXY PURE copper LAP-SHEAR work HARDENING NUMERICAL simulation 

分 类 号：TG457[金属学及工艺—焊接]