焊管2024，Vol.47Issue(6)：28-33,6.DOI:10.19291/j.cnki.1001-3938.2024.06.005
CT70低合金高强度油管用钢激光焊接接头残余应力有限元模拟
Finite Element Simulation of Residual Stress in Laser Welded Joints of CT70 Low Alloy High Strength Tubing Steel
摘要
Abstract
Considering the axisymmetric properties of test plate,weld and heat source,a 1/2 axisymmetric finite element analysis model was established by using finite element software to simulate the temperature field,deformation field and stress field of the laser welded joint of CT70 coiled tubing steel.The results show that the weld size simulated by laser welding finite element is basically consistent with the actual size.The residual stress in the finite element simulation of laser welding is mainly concentrated around the weld,the residual stress decreases gradually in the area far from the weld,and the center of the laser welding weld is the tensile stress.The deformation of laser welding is the largest around the weld,and the farther away from the weld,the smaller the deformation.The finite element simulation results are compared with the actual test results.The center of laser welding seam is tensile stress,which is the same as the finite element calculation results.关键词
低合金高强度油管/激光焊/焊接接头/残余应力Key words
low alloy high strength tubing/laser welding/welded joint/residual stress分类
矿业与冶金引用本文复制引用
张阿昱,王建,张亚刚,毕宗岳,余晗..CT70低合金高强度油管用钢激光焊接接头残余应力有限元模拟[J].焊管,2024,47(6):28-33,6.基金项目
中国石油天然气集团有限公司前瞻性基础性技术攻关项目"井下大功率电加热器研制"(项目编号2022DJ1409). （项目编号2022DJ1409）
