基于原位测量的钨极惰性气体保护焊焊接过程高温应变表征与计算  

Characterization and Calculation of High Temperature Strain in Gas Tungsten Arc Welding Based on in Situ Measurement

作　　者：周凯荣 陈建[2] 陈玉喜[1] 陈华斌[1] 陈善本[1] ZHOUKairong CHEN Jian CHEN Yuxi CHEN Huabin CHEN Shanben(Material Science and Engineering, Shanghai Jiaotong Univerisity, Shanghai 200240, China Oak Ridge National Laboratory, TN 37063, USA)

机构地区：[1]上海交通大学材料科学与工程学院,上海200240 [2]美国橡树岭国家实验室,tn37063

出　　处：《上海交通大学学报》2016年第10期1588-1591,1596,共5页Journal of Shanghai Jiaotong University

基　　金：国家自然科学基金项目(51575348)资助

摘　　要：采用数字图像相关(DIC)方法与有限元法相结合模拟钨极惰性气体保护焊(GTAW)焊接过程高温应变的演化规律.利用DIC方法获得整个焊缝热影响区的高温应变,并用ABAQUS软件模拟计算GTAW焊接过程的温度场和应变场,将计算结果与DIC方法所得高温应变进行对比.同时,通过原位测量焊缝热影响区的高温应变,验证了DIC方法表征焊接过程高温应变的可行性以及有限元法模拟结果的合理性.The digital image correlation （DIC） method was combined with finite element simulation to describe the high temperature strain evolution of gas tungsten arc welding （GTAW）. The DIC method was adopted to get the strain evolution at a high temperature heat affected zone. Then, the finite element modeling method of the ABAQUS software was used to simulate the temperature and strain fields of heat affected zone （HAZ）. The results were compared with the results of the DIC measurement. By calculating HAZ strain measurement, the feasibility of the DIC method in describing high temperature strain and the rationality of the finite element model were validated.

关 键 词：钨极惰性气体保护焊 应变 数字图像相关 有限元法 

分 类 号：TG404[金属学及工艺—焊接]