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通过复合材料层合板雷电流冲击的热-电耦合分析,建立复合材料层合板烧蚀的三维有限元模型,研究复合材料层合板在不同材料属性下的瞬态热传递和热解作用规律,进行雷击复合材料损伤机理和损伤模式分析,根据烧蚀后的温度分布评估雷电流烧蚀尺寸变化规律,得出复合材料烧蚀损伤与材料性能的关系,结果表明电导率对烧蚀形貌的发展变化产生很大影响,热导率变化时烧蚀结果并没有发生显著改变。比热只有增加到一定程度烧蚀损伤才会降低。
Through the thermo-electric coupling analysis of composite laminates lightning current impingement, a three-dimensional finite element model of composite laminates ablation was established. The law of transient heat transfer and pyrolysis of composite laminates under different material properties was studied. According to the temperature distribution after ablation, the rule of laser current ablation size was evaluated, and the relationship between the ablation damage of composite material and the material properties was obtained. The results showed that the conductivity of the ablation morphology The change has a significant effect, and ablation results have not changed significantly when the thermal conductivity changes. The specific heat only increased to a certain extent, ablation damage will be reduced.