6系铝合金板搅拌摩擦焊残余应力有限元分析  

Finite Element Analysis of Residual Stress in Friction Stir Welding of 6 Series Aluminum Alloy Plate

作　　者：陈彦君 朱平[2] 张秀娟[1] 廉涛 CHEN Yanjun;ZHU Ping;ZHANG Xiujuan;LIAN Tao(School of Mechanical Engineering,Dalian Jiaotong University,Dalian 116028,China;School of Materials Science and Engineering,Dalian Jiaotong University,Dalian 116028,China)

机构地区：[1]大连交通大学机械工程学院,辽宁大连116028 [2]大连交通大学材料科学与工程学院,辽宁大连116028

出　　处：《大连交通大学学报》2019年第6期93-97,共5页Journal of Dalian Jiaotong University

基　　金：国家自然科学基金资助项目(60870009)

摘　　要：基于Johnson-Cook本构方程和罚接触算法,提出了一种新的6系铝合金板搅拌摩擦焊残余应力有限元分析模型.获得了焊板的纵、横向残余应力的分布规律,并采用X射线应力检测仪对有限元分析结果进行实验验证,实验表明本模型的分析结果正确.分析结果对6系铝合金板搅拌摩擦焊提供了一定的理论基础和分析数据.Based on Johnson-Cook constitutive equation and penalty contact algorithm,a new finite element model of residual stress is presented for friction stir welding of 6 series aluminum alloy plate.The distribution laws of longitudinal and transverse residual stress of welded plate are obtained.The results of finite element analysis are verified by using the measurement results of X-ray stress detector.The experiment results show that the analysis results of this model are correct.The results provide a theoretical basis and analysis data for friction stir welding of 6 series aluminum alloy plate.

关 键 词：搅拌摩擦焊 有限元分析模型 动力学分析 残余应力 

分 类 号：TG1[金属学及工艺—金属学]