Effect of welding sequences on welding residual stress and distortion of T-joint

This paper analyzes the thermo mechanical behavior and evaluates the welding residual stresses and distortion with various types of welding sequence in T-joint welds by performing thermal elasto-plastic analysis using finite element techniques. The 3-D solid elements are used in FE model, and material properties depending on the temperature are considered as well as the convection and radiation as boundary conditions. The stress distributions and distortion field are obtained. The welding residual stress and distortion are largely influenced by the welding sequences. When welding was performed continuously from one side to the other side, the magnitude of residual stress and distortion was the smallest.