Numerical Simulation of Welding Residual Stress of Tube and Tube-sheet Welded Joints
Do some research on numerical simulation of welding residual stress of slurry steam generator tube extend out end of tube sheet welded joint based on ANSYS.Finite Element Analysis showes that preheated can effective reduce the traverse residual stresses,but have a definite effect on longitudinal welding residual stress.By the welding conditions,the maximum traverse residual stresses present to weld root next to the welding heat affected zone,which play a major role in stress corrosion cracking.The preheating reduce the maximum traverse residual stresses by 20%.The traverse residual stress distribution had be improved obviously,especially the traverse residual stress reduced on the tube bridges which can reduce risk on stress corrosion cracking.