Study on Welding Residual Stresses of the I-girder with Corrugated Steel Web

被引：0
|
作者：
Yan L. [1 ]
Guan Y. [1 ]
Luo K. [2 ]
Ji W. [1 ]
机构：
[1] College of Civil Engineering, Lanzhou Jiaotong University, Lanzhou
[2] College of Civil Engineering, Hunan University, Changsha
来源：
Hunan Daxue Xuebao/Journal of Hunan University Natural Sciences | 2023年 / 50卷 / 03期
基金：
中国国家自然科学基金;
关键词：
corrugated steel web; infrared temperature measurement method; numerical simulation; residual stress; temperature field; welding test;
D O I：
10.16339/j.cnki.hdxbzkb.2023038
中图分类号：
学科分类号：
摘要：
The welding temperature fields and residual stress distribution of the Q345 I-girder with corrugated steel web were studied through numerical simulation and experimental methods. The thermoelastic-plastic three-dimensional finite element models of the I-girder with corrugated steel web were established by using the complete coupling method，and the welding temperature fields and stress fields were obtained. By defining multiple research paths in the finite element models，the distributions of longitudinal and transverse residual stresses of the I-girder with corrugated steel web under different welding paths were studied. In the welding process of the I-girder with corrugated steel web，the infrared temperature measurement method and resistance strain gauge method were used to study the welding temperatures and residual stresses. The results show that the numerical simulation results of welding residual stresses are in good agreement with the measured results，which verifies the correctness and feasibility of the numerical simulation method. During the welding process，the stable temperature of the heat source center is up to 140 1 ℃，and the temperature away from the heat source center decreases rapidly. When the distance from the heat source center is more than 25 cm，the temperature approaches room temperature. The maximum von Mises stress of the weld at the bending corner of the corrugated web is 395 MPa，which is much higher than the yield strength of the material. The longitudinal residual stresses on the web surface 0.5 cm away from the weld is up to 351 MPa，while the transverse residual stress on the web surface fluctuates in the form of parabola，with a maximum value of 48.5 MPa. The welding residual stresses on the I-girder with corrugated steel web are mainly longitudinal stresses，which are mainly distributed within 20 cm from the weld. The research results of this paper can provide a reference basis for the elimination of residual stresses of the I-girder with corrugated steel in practical engineering. © 2023 Hunan University. All rights reserved.
引用
收藏
页码：143 / 151
页数：8
相关论文
共 25 条
  • [1] LIN M K，, JI W, Study on accordion effect of corrugated steel webs I-shaped steel girde［J］, Journal of Railway Science and Engineering, 13, 2, pp. 283-288, (2016)
  • [2] Analysis of thermal stresses and its effect in the multipass welding process of SS316L［J］, Proceedings of the Institution of Mechanical Engineers，Part E：Journal of Process Mechanical Engineering, 235, 2, pp. 384-391, (2021)
  • [3] RETHMEIER M．, Comparison of analytical and numerical welding temperature field calculation ［J］, Computational Materials Science, 47, 4, pp. 1005-1015, (2010)
  • [4] WANG X D, CHEN L．, Influence of constraint on welding deformation of T joint welded by dual-beam laser, Transactions of the China Welding Institution, 37, 3, pp. 101-105, (2016)
  • [5] ZHAO Q，WU C．, Numerical analysis of welding residual stress of U-rib stiffened plate［J］, Engineering Mechanics, 29, 8, pp. 262-268, (2012)
  • [6] ZHAO Q, DONG R, Effect of thermophysical and mechanical parameters on welding residual stress of hybrid steel U-rib stiffened plate［J］, Transactions of the China Welding Institution, 37, 3, pp. 28-32, (2016)
  • [7] ZHANG Q H, Experimental investigation and numerical simulation on welding residual stress of innovative double-side welded rib-to-deck joints of orthotropic steel decks ［J］, Journal of Constructional Steel Research, 179, (2021)
  • [8] Experimental and finite element analysis of a T-joint welding［J］, Journal of Mechanics Engineering and Automation, 2, 7, pp. 411-412, (2012)
  • [9] LAN L Y，, SHAO G Q, ZHANG Y T, Influence of welding sequence on residual stress and deformation of T-joint of Q690 steel［J］, Journal of Northeastern University（Natural Science）, 41, 12, pp. 1741-1746, (2020)
  • [10] LU S J，, ZHENG Q，, ZHANG C H, A comparative study on computational accuracy and efficiency of welding residual stress and deformation in a Q390 steel thick plate T joint among three kinds of different FEM software［J］, Journal of Mechanical Engineering, 55, 6, pp. 11-22, (2019)
123