焊接顺序对厚壁筒体纵焊缝残余应力的影响  

Influence of Welding Sequence on Residual Stress of Longitudinal Weld of Thick-Wall Cylinder

作　　者：李静文 Li Jingwen

机构地区：[1]中海油石化工程有限公司,济南250000

出　　处：《化工设计》2023年第1期27-32,共6页Chemical Engineering Design

摘　　要：本文采用热-弹塑性顺次耦合数值模拟方法,研究不同焊接顺序下X型坡口厚壁筒体纵焊缝残余应力分布规律,并针对不同的服役工况推荐安全可靠性最高的焊接顺序。In this paper,the thermal-elastic-plastic sequential coupling numerical simulation method is used to study the distribution rule of residual stress in the longitudinal weld of the thick-walled cylinder with X-groove under different welding sequences,and the welding sequence with the highest safety and reliability is recommended for different service conditions.

关 键 词：多层多道焊 焊接顺序 热-弹塑性顺次耦合 X型坡口 焊接残余应力 

分 类 号：TG404[金属学及工艺—焊接]