This paper proposes a progressive damage model incorporating strain and heating rate effects for the prediction of composite specimen damage resulting from simulated lightning strike test conditions. A mature and robust customised failure model has been developed. The method used a scaling factor approach and non-linear degradation models from published works to modify the material moduli, strength and stiffness properties to reflect the effects of combined strain and thermal loading. Hashin/Puck failure criteria was used prior to progressive damage modelling of the material. Each component of the method was benchmarked against appropriate literature. A three stage modelling framework was demonstrated where an initial plasma model predicts specimen surface loads (electrical, thermal, pressure); a coupled thermal-electric model predicts specimen temperature resulting from the electrical load; and a third, dynamic, coupled temperature-displacement, explicit model predicts the material state due to the thermal load, the resulting thermal-expansion and the lightning plasma applied pressure loading. Unprotected specimen damage results were presented for two SAE lightning test Waveforms (B & A); with the results illustrating how thermal and mechanical damage behaviour varied with waveform duration and peak current.

本文提出了一种包含应变和加热速率效应的渐进式损伤模型，用于预测由模拟雷击测试条件引起的复合材料试样的损伤。已经开发了成熟且健壮的定制故障模型。该方法使用比例因子方法和已发表作品的非线性退化模型来修改材料的模量，强度和刚度属性，以反映组合应变和热负荷的影响。在对材料进行渐进式损坏建模之前，先使用Hashin / Puck破坏准则。该方法的每个组成部分均以适当的文献为基准。演示了一个三阶段建模框架，其中初始血浆模型可以预测样品的表面负荷（电，热，压力）；耦合的热电模型可预测由电负载引起的样品温度；第三是动态耦合的温度位移显式模型，可预测由于热负荷，所产生的热膨胀和雷电等离子施加的压力负荷而引起的材料状态。给出了两个SAE雷电测试波形（B＆A）的未保护标本损坏结果；结果表明，热损伤和机械损伤行为如何随波形持续时间和峰值电流而变化。给出了两个SAE雷电测试波形（B＆A）的未保护标本损坏结果；结果表明，热损伤和机械损伤行为如何随波形持续时间和峰值电流而变化。给出了两个SAE雷电测试波形（B＆A）的未保护标本损坏结果；结果表明，热损伤和机械损伤行为如何随波形持续时间和峰值电流而变化。