Effect of welding sequence on residual stress in thin-walled octagonal pipe-plate structure

作     者：傅定发 周长青 李灿 王冠 李落星 Ding-fa FU;Chang-qing ZHOU;Can LI;Guan WANG;Luo-xing LI

作者机构：湖南大学材料科学与工程学院长沙410082 湖南大学汽车车身先进设计与制造国家重点实验室长沙410082 

基　　金：Project(61075005)supported by the Fund of State Key Laboratory of Advanced Design and Manufacture for Vehicle Body in Hunan University,China Project(09JJ1007)supported by Preeminent Youth Fund of Hunan Province,China Project(51075132)supported by the National Natural Science Foundation of China 

出 版 物：《Transactions of Nonferrous Metals Society of China》 (中国有色金属学报（英文版）)

年 卷 期：2014年第24卷第3期

页      码：657-664页

摘      要：A three-dimensional finite element approach based on ABAQUS code was developed to investigate the effect of welding sequence on welding residual stress distribution in a thin-walled 6061 aluminum alloy structure. To obtain sound numerical results, the therrno-mechanical behaviour was simulated using a direct-coupled formulation. Nine different simulation sequences were carried out by single-pass TIG welding of an octagonal pipe-plate joint, and the distributions of longitudinal and transverse residual stresses both on the outer and inner surfaces of the pipe were analyzed. The results suggest that the final residual stresses in the weld and its vicinity are not affected by the initial residual stresses of the structure. Selecting a suitable welding sequence can reduce the final residual stress in an octagonal pipe-plate joint.

主 题 词：residual stress welding sequence pipe-plate joint single-pass welding initial residual stress 

学科分类：080503[080503] 0806[工学-电气类] 08[工学] 0818[工学-交通运输类] 0815[工学-矿业类] 0805[工学-能源动力学] 0813[工学-化工与制药类] 0703[理学-化学类] 0802[工学-机械学] 0814[工学-地质类] 0702[理学-物理学类] 080201[080201] 

核心收录：

D　O　I：10.1016/S1003-6326(14)63108-3

馆 藏 号：203492443...