基于ABAQUS计算软件建立了薄板T型焊的三维有限元模型,采用Goldak双椭球移动热源模型,运用热-弹-塑性力学的顺序耦合计算方法模拟得到薄板T型焊的焊接残余应力、温度场及变形。为了验证数值计算方法的有效性,进行了Q235钢薄板T型双边焊接试验,采取通孔法测量了焊件给定测点的残余应力。结果表明:数值模拟得到的焊接残余应力峰值大小和分布规律与试验结果吻合较好。 Based on ABAQUS calculation software, a three-dimensional finite element model of sheet metal T-welding was established. By using Goldak double ellipsoid moving heat source model, the welding residual stress and temperature field of sheet T welding were simulated by the sequential coupled calculation method of thermo-elastic-plasticity mechanics And deformation. In order to verify the validity of the numerical calculation method, the T-type bilateral welding test of Q235 steel sheet was carried out. The residual stress of the given measuring point of the weldment was measured by the through-hole method. The results show that the peak value and distribution of welding residual stress obtained by numerical simulation are in good agreement with the experimental results.