To investigate the influence of the laser shock processing (LSP) on the residual stress of the high-strength steel gear root

ABAQUS software is used to simulate the laser shock processing

and the experimental results are analyzed to verify the accuracy of the simulation model. The results show that this model accurately predicts the distribution of the residual stress on the gear root after LSP

and the law of LSP reflected by the simulation is consistent with the experimental results. According to the distribution of the residual stress

it is concluded that laser shock processing introduces near-surface compressive residual stress which varies in different directions. Specifically

the average value of the compressive residual stress along the gear root is larger than that in the vertical direction.