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氧碘化学激光(COIL)(波长1.315mm)辐照纯铝表面,激光束斑直径为6mm,功率密度为10～20kW/cm2,材料表面在激光能量作用下瞬间发生熔化。以傅里叶热传导模型为基础,利用ANSYS对化学激光与铝相互作用的过程进行模拟,得到了熔池的形貌特征及相关的温度时间关系曲线。对不同功率密度激光作用的模拟结果进行分析,并求解了纯铝熔化破坏的激光功率阈值。
Oxygen iodine chemical laser (COIL) (wavelength of 1.315mm) irradiated aluminum surface, the laser beam spot diameter of 6mm, the power density of 10 ~ 20kW / cm2, the surface of the material under the action of laser energy melts instantly. Based on the Fourier heat conduction model, the process of interaction between chemical laser and aluminum was simulated by ANSYS, and the morphology of the molten pool and the related temperature-time curve were obtained. The simulation results of the laser with different power density are analyzed and the laser power threshold of melting and destroying aluminum is solved.