Analysis on Temperature Field and Stress Field of T-type Long Plate Welding

The numerical simulation of 4 m T-welded joint welding process was carried out by the finite element software Ansys.Using the indirect coupling method,the temperature field was calculated and then the stress analysis was carried out to obtain the stress field.It was found out that there would be a very uneven temperature field after welding,and it would lead to large welding residual stress and residual deformation.The calculated results showed that the temperature field was good agree with the experimental results,but not for the welding residual deformation.In order to study the influence of the boundary condition on residual deformation,parameter analysis were carried out.It was found out that supporting the plate during welding could reduce the residual deformation effectively.