Research on Numerical Simulation of Controlling Titanium alloy sheet’s welding residual stress by trailing peening

摘要

It is a promising and new technology to apply welding with trailing peening to controlwelding stress and distortion of titanium alloy. Numerical simulation of conventional welding andwelding with trailing peening of the Titanium alloy sheet is carried out, using nonlinear finiteelement theory and the engineering analysis software MARC. The result shows that welding withtrailing peening technology reduces longitudinal residual stress in welding joint effectively, and itis more effective to reduce residual stress to peen the weld than to peen the weld toe. It is aeffective result that other technology and method used in welding can never achieved.