Numerical Simulation of Controlling in Titanium Alloy Sheets Welding Residual Stress by Trailing Peening

It is a promising and new technology to apply welding with trailing peening to controlwelding stress and distortion of titanium alloy. Numerical simulation of conventionalwelding and welding with trailing peening of the titanium alloy sheet is carried out,using nonlinear finite element theory and the engineering analysis software MARC.The result shows that welding with trailing peening technology reduces longitudinalresidual stress in welding joint effectively, and it is more effective to reduce residualstress to peen the weld than to peen the weld toe. It is a effective result that othertechnology and method used in welding can never achieved.