基于虚拟实验法，发展了细观有限元模型，研究了芳纶纸表面的树脂涂层厚度对 Nomex 蜂窝夹层结构冲击响应及损伤情况的影响。研究结果发现，树脂涂层厚度越大，冲击的接触力峰值越大。若冲击能量不足以穿透上面板，则蜂窝吸收能量随树脂涂层厚度的增大而提高；冲击能量足以穿透上面板，则冲头侵彻深度随树脂涂层厚度增大有明显下降，同时蜂窝面外的损伤程度也降低。提高树脂涂层厚度，对于提高 Nomex 蜂窝的抗穿透能力较为有效，但对损伤的面积影响较小。%Based on the virtual test method,a meso-scale finite element model was developed and proposed to investigate the influences of resin layer thickness on impact responses and damage of Nomex honeycomb sandwich panels. Through the study,it was shown that the larger the resin layer thickness,the greater the impact force peak;the honeycomb's absorpting energy increases with increase in resin layer thickness if the impact energy is not enough to penetrate the top face-sheet,however,the impact depth decreases greatly with increase in resin layer thickness if the impact energy is enough to perforate the top face-sheet;increasing resin layer thickness can significantly improve the penetration resistance ability of Nomex honeycomb sandwich structures,while it has smaller effects on the damage area.
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