Influence of Clamping Conditions on Residual Stress in Double-Sided T-Joint Welding

This paper studies the residual stress in double-sided T-joint welding of non-alloy structural steel with different clamping conditions. The base material for the specimen of T-joint is S355J2G3 steel. The dimensions of flange plate and of web plate are 200 mm × 200 mm × 10 mm and 200 mm × 100 mm × 10 mm, respectively. The single pass welds on both sides of T-joint are realized simultaneously. The fillet welds in the T-joint are performed by the MAG welding process. Residual stresses results in the T-joint with different clamping conditions are presented and discussed. The ESI SYSWELD finite element software which is based on finite element method is utilized for thermal- mechanical analysis of this welding joint. Obtained results show that the residual stresses in the clamping boundary condition is much greater than that in the free boundary condition.