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利用Nd:YAG激光器对厚度为0.5mm的Al-Cu-Mg系2024铝合金薄板进行激光焊接试验。通过正交实验研究了影响焊缝质量的因素,优化了激光焊接工艺参数,并基于ANSYS建立高斯热源模型,利用APDL语言编程实现热源的移动加载,从而对焊接温度场进行动态模拟,得出温度分布,最后进行温度场和焊缝宽度测量。对比表明,试验数据和模拟结果吻合较好。
The laser welding test of Al-Cu-Mg system 2024 aluminum alloy sheet with thickness of 0.5mm was carried out by Nd: YAG laser. Through orthogonal experiment, the factors affecting the weld quality were studied, the parameters of laser welding process were optimized, the Gaussian heat source model was established based on ANSYS, and the load of heat source was programmed by APDL language to simulate the welding temperature field dynamically. Distribution, the final temperature field and weld width measurement. The comparison shows that the experimental data are in good agreement with the simulation results.