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利用激光冲击波技术对钛合金板料进行了成形实验,所采用的激光波长为1.064μm,脉宽约23ns,能量35J左右,有效光斑直径8mm,脉冲的重复率0.5Hz。并用ABAQUS软件对激光冲压TC4板料成形进行了仿真分析,探讨了激光参数、板料性能、约束边界、冲击路径等条件对板料小曲率成形的影响,获得了在激光连续冲击条件下,板料成形深度、成形轮廓与激光参数、约束边界条件和冲击路径之间的变化规律。通过此类激光冲击实验可优化激光冲击的相关参数,预测板料变形。
The laser shock wave technique was used to form the titanium alloy sheet. The laser wavelength was 1.064μm, the pulse width was about 23ns, the energy was about 35J, the effective spot diameter was 8mm and the pulse repetition rate was 0.5Hz. The forming process of laser punching TC4 sheet was simulated by ABAQUS software. The influence of laser parameters, sheet properties, confinement boundary and impact path conditions on the small curvature of sheet metal was discussed. Under continuous laser shock conditions, Material forming depth, forming profile and laser parameters, bounding boundary conditions and the impact of the path between the law of change. Through such laser impact experiments can optimize the relevant parameters of laser shocks, predict sheet deformation.