【摘要】 为解决超高斯激光在材料去除过程中对温度场分布以及烧蚀深度影响的问题，建立以超高斯激光为热源去除铝合金表面涂层的有限元传热模型。利用傅里叶传热方程，通过改变超高斯脉冲激光的高斯阶次、输出功率、脉冲宽度，对铝合金表面涂层的温度场分布以及烧蚀深度进行仿真模拟计算。研究结果表明，较大的高斯阶次、激光功率以及较短的脉冲宽度能够使涂层达到较高的温度，并能够使涂层有更大的烧蚀深度，高斯阶次为3、脉冲宽度为500 ns、激光功率为15 W时有着较好的去除效果，这为激光去除铝合金表面涂层提供了相关的理论参考。更多还原

【Abstract】 To address the issue of how ultra-Gaussian laser emissions impact the distribution of the temperature field and the depth of ablation during the material ablation process, a finite element heat transfer model utilizing an ultra-Gaussian laser as a heat source for the removal of aluminum alloy surface coatings was developed. Employing the Fourier′s law of heat conduction, the temperature field distribution and the depth of ablation for the aluminum alloy coating were simulated by modifying the order of the Gaussian function, the output power, and the pulse width of the super-Gaussian pulsed laser. The findings indicate that an increased Gaussian order, laser power, and reduced pulse width contribute to higher temperatures and greater depths of ablation achieved within the coating. Optimal removal effects were observed when the Gaussian order was 3, the pulse width was 500 nanoseconds, and the laser power was set at 15 W, which provides a theoretical foundation for the laser-based removal of aluminum alloy surface coatings.更多还原