In order to control surface microscopic quality of sheet metal after laser peen forming
(LPF), visual numerical analyses for SUS304 plate was employed. Based on the FEM code
ABAQUS/CAE, a conversion model of laser shock wave loading was established. The tracks
controlling technology of LPF was solved by functional element programs. The micro-plastic flow
process of surface material was analyzed, and the change of residual stress distribution as well as
micro-topography in real time can be shown with the movement of pulsed laser beam. On the basis of
FEM simulation, LPF experiments were carried out. The micro-topography and section analysis were
analyzed by AFM, surface residual stress was measured by X-ray diffraction method. It was found
that after LPF, the surface irregularity was less than 0.15μm, the variation of average surface
roughness was slight, both sides of deformed sheet existed useful residual compressive stress, and the
maximum stress was -616.1MPa, meanwhile average surface micro-hardness in the peened zone was
higher than the base’s surface. Simulative results show a good agreement with experimental results.
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