Work hardening of adhesively bonded pure copper single lap joints
来源期刊：中国有色金属学报(英文版)2005年第z3期
论文作者：郑小玲 熊惟皓 郑勇 余海洲 游敏 刘文俊
文章页码：365 - 368
Key words：epoxy； pure copper； lap-shear； work hardening； numerical simulation
Abstract: 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 2mm and 4mm 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.
