焊管2025，Vol.48Issue(6)：51-61,11.DOI:10.19291/j.cnki.1001-3938.2025.06.007
集箱-管座-支管双接头结构的焊接数值模拟与验证
Numerical Simulation and Verification of Welded Header-Pipe Seat-Branch Pipe Double-joint Structure
摘要
Abstract
Due to the special structural characteristics of the pipe seat,there is a stress concentration phenomenon in the welding process,and it bears double welding stress as a joint.Based on Simufact Welding professional welding software,the complete welding process of saddle weld and girth weld at both ends of the pipe seat is numerically simulated and experimentally studied.The temperature field,stress field and deformation analysis of the multi-layer multi-pass weld structure were carried out by using the optimized welding sequence and interlayer temperature.Results show that the highest temperature of the double-joint structure is concentrated in the pipe seat,and the heat-affected zone between the two welds will affect each other.Meanwhile,the residual stress at the girth weld of the pipe seat is transmitted to the saddle weld through the pipe seat.Compared with the single saddle weld,the residual stress in the saddle weld in the double-joint structure is significantly reduced,which indirectly improves the welding quality of the overall structure of the double-joint weld of the pipe seat.关键词
双接头结构/焊缝/数值模拟/温度场/应力场/形变分析Key words
double-joint/numerical simulation of weld seams/thermal field/stress field/deformation analysis分类
矿业与冶金引用本文复制引用
买春亮,胡雪,张立新,张胜利,董峰,王丽..集箱-管座-支管双接头结构的焊接数值模拟与验证[J].焊管,2025,48(6):51-61,11.基金项目
兵团科技计划项目"面向水压复合内衬不锈钢直缝焊管的制管生产线集成研发与应用示范"(项目编号2023AB012) （项目编号2023AB012）
兵团科技计划项目"基于水压复合技术内衬不锈钢复合管装备的设计与研发"(项目编号2021AB002). （项目编号2021AB002）
