ABSTRACT
When a material is heated to an elevated temperature in a welded joint, the highly localized transient heat and strongly nonlinear temperature fields in both heating and cooling processes cause nonuniform thermal expansion and contraction and thus result in plastic deformation in the weld and surrounding areas. During welding, one edge of the plate can be assumed to be fixed to reduce the deformation. Therefore, stress is generated due to fixed constraints during welding. If the stress level is very high then it can be harmful to the structure. So, it is necessary to investigate how much stress is generated in a plate after welding due to boundary constraint.
