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激光冲击板料变形是利用高能脉冲激光和材料相互作用诱导的高幅冲击波的力效应使板料产生塑性变形的新技术 ,本文利用Nd :Glass脉冲激光对厚度为 0 .8mm的LD31薄板进行激光冲击变形实验。所用激光参数为 :脉冲能量 15～ 30J,脉冲宽度 2 5ns ,光斑直径Φ8mm。利用ABAQUS软件对激光冲击下板料的变形过程进行了数值模拟 ,建立了激光冲击波加载的数学模型 ,探索激光冲击的主要参数和板料变形之间的相互关系 ,为激光冲击变形工艺参数的优化、板料变形的理论分析 ,实现大面积金属板料的柔性激光冲压成形提供依据。
Laser shock plate deformation is the use of high-energy pulsed laser and material interaction induced high-amplitude shock wave force effect of sheet metal plastic deformation of the new technology, the use of Nd: Glass pulsed laser thickness of the LD31 0.08mm laser plate Impact deformation test. The laser parameters used are: pulse energy 15 ~ 30J, pulse width 25ns, spot diameter Φ8mm. ABAQUS software was used to simulate the sheet metal deformation under laser shock. The mathematical model of laser shock wave loading was established. The relationship between the main parameters of laser shock and sheet metal deformation was explored to optimize the process parameters of laser shock deformation , The theoretical analysis of sheet metal deformation, to achieve large-scale sheet metal flexible laser stamping provide the basis.