激光喷丸成形是脉冲激光束冲击金属表面时形成一种冲击波,传入工件内部使受喷材料在表面及内部产生深层分布的残余压应力场而使板料成形的技术。分析了多点全面喷丸成形、多点选择喷丸成形单曲面和马鞍形双曲面的激光喷丸方法,建立了激光冲击波加载的数学模型,并以有限元软件ABAQUS为平台,对不同形状和尺寸的板料进行了激光喷丸成形的数值模拟,验证了所分析的喷丸轨迹的正确性。发现采用不同轨迹对板料进行喷丸可以得到不同形状的板件。通过模拟,可以为实验提供更准确的喷丸方案,从而提高喷丸的效益和替代传统的试喷方法。

Laser peen forming (LPF) is a process that elongates the peened metal surface and bends the overall shape with a shockwave, which is formed by a pulsed laser beam shocking the metal surface, penetrates the metal and introduces a residual impress stress field in the surface and inside. The methods of LPF including multi-full peening and multi-selective peen forming single curved face and saddle-saddle-shaped hyperboloid are studied. Mathematical mode of LPF is established, LPF of the sheet metal of different form and size is numerically simulated with the ABAQUS software and the availability of the analytical peen way is proved. The results show that different kinds of deformations can be obtained with diverse ways of peening. The simulation can offer accurate peening schemes for experiments, improve the efficiency and help replace the traditional test-peening with LPF.