A heterogeneous simulation model considering carbon fiber and resin phase about laser ablation of carbon fiber reinforced composite (CFRP) was established by ANSYS firstly. Then the ablation process of CFRP by short pulse laser was simulated and the mechanism of laser scanning direction on heat affected zone (HAZ) was studied. Lastly, the validity of the model was verified by experiments. The results show that the width of the heat affected zone increases with the angle between the laser scanning direction and the carbon fiber laying direction, while the fracture length of the carbon fiber increases firstly and then decreases. The split line is 45°, which also indicates the existence of the optimal scanning direction and has a certain guiding significance for the cutting of CFRP.

首次利用ANSYS建立了考虑碳纤维和树脂相的碳纤维增强复合材料(CFRP)激光烧蚀异质仿真模型。然后模拟了短脉冲激光对CFRP的烧蚀过程，研究了激光扫描方向对热影响区(HAZ)的作用机理。最后通过实验验证了模型的有效性。结果表明，热影响区宽度随着激光扫描方向与碳纤维铺设方向夹角的增大而增大，而碳纤维的断裂长度先增大后减小。分割线为45°，这也说明了最佳扫描方向的存在，对CFRP的切割具有一定的指导意义。