Lightning strikes generate large amounts of energy. Thus, composite structures subjected to lightning strikes undergo significant physicochemical changes. In this study, the thermal shock damage and three-phase transition of a composite reinforced panel were investigated through a numerical simulation, an experiment, and ultrasonic C-scanning. An anisotropic constitutive model and PUFF equation of state (EOS) were proposed to study the damage behaviors of composite materials. The dynamical damage behaviors and three-phase transition of the composite reinforced panel were simulated using the proposed constitutive model and PUFF EOS. Finally, a lightning experiment and ultrasonic C-scanning were conducted to validate the numerical results. Obvious fiber upwarping and swelling were observed in the numerical simulation. The melted and vaporized materials caused a reverse thermal shock effect, which led to concave pits, buckling and internal damages in the composite reinforced panel. The numerical results were compared with experimental results and scanning results to validate that the proposed constitutive model and modified PUFF EOS can be well used to simulate the dynamical damage behaviors of composite materials. The simulated damage behaviors of the composite reinforced panel agreed well with the behaviors observed in the experiment.

雷击会产生大量能量。因此，遭受雷击的复合结构发生重大的物理化学变化。在这项研究中，通过数值模拟，实验和超声C扫描研究了复合增强板的热冲击破坏和三相转变。提出了各向异性本构模型和PUFF状态方程（EOS）研究复合材料的损伤行为。利用所提出的本构模型和PUFF EOS，模拟了复合材料增强板的动力损伤行为和三相转变。最后，进行了闪电实验和超声C扫描以验证数值结果。在数值模拟中观察到明显的纤维翘曲和溶胀。熔化和汽化的材料引起反向热冲击效应，从而导致凹坑，屈曲和复合增强板内部损坏。将数值结果与实验结果和扫描结果进行了比较，证明所提出的本构模型和改进的PUFF EOS可以很好地用于模拟复合材料的动力损伤行为。复合材料增强板的模拟损伤行为与实验中观察到的行为非常吻合。将数值结果与实验结果和扫描结果进行了比较，证明所提出的本构模型和改进的PUFF EOS可以很好地用于模拟复合材料的动力损伤行为。复合材料增强板的模拟损伤行为与实验中观察到的行为非常吻合。将数值结果与实验结果和扫描结果进行了比较，证明所提出的本构模型和改进的PUFF EOS可以很好地用于模拟复合材料的动力损伤行为。复合材料增强板的模拟损伤行为与实验中观察到的行为非常吻合。