内凹弧形蜂窝夹芯板低速弹道冲击试验与数值仿真

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摘要面向弹道冲击防护，设计制备了1060铝合金材质的内凹弧形（re-entrant circular，REC）和传统内凹（re-entrant ，RE）六边形蜂窝夹芯板。采用钢质圆柱弹低速冲击试验结合有限元数值仿真，研究对比了两类蜂窝夹芯板的低速弹道冲击动态响应与防护性能。进而，利用经验证的有限元模型，仿真分析着靶速度对两类蜂窝夹芯板的低速弹道冲击最大永久压缩量、局部泊松比值和各部件吸能占比的影响。最后，分析了REC蜂窝胞元的圆弧胞壁半径、胞元长度等结构参数对夹芯板低速弹道冲击响应的影响。结果表明：相比RE蜂窝，REC蜂窝夹芯板在相同弹道冲击载荷下最大永久压缩量更小，抗弹性能更优，并且低速下优势更显著；随着胞元长度和圆弧胞壁半径减小，REC蜂窝夹芯板的抗弹性能可进一步提升。

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	杨姝1
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	亓昌1
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关键词 ：蜂窝材料, 夹芯板, 弹道冲击, 负泊松比, 数值仿真

Abstract：For ballistic impact protection, 1060 aluminum alloy re-entrant circular (REC) and traditional re-entrant (RE) hexagonal honeycomb sandwich panels were designed and fabricated. The dynamic response and protection performance of the two types of honeycomb sandwich panels under low-speed ballistic impact load were studied and compared by using steel cylindrical projectile low-speed impact test and finite element (FE) numerical simulation. Using the verified FE model, the effects of ballistic speed on the maximum permanent compression, local Poisson’s ratio and energy absorption partition of two types of honeycomb sandwich panels under low-speed ballistic impact were simulated and analyzed. Finally, the effects of structural parameters such as circular cell wall radius and cell length of REC honeycomb cell on the low-speed ballistic impact response of sandwich panel were studied. The results show that compared with RE honeycomb, REC honeycomb sandwich panel has smaller maximum permanent compression and better ballistic performance under the same ballistic impact load, and the advantage is more obvious at low speed; With the decrease of cell length and circular cell wall radius, the ballistic performance of REC honeycomb sandwich panel can be further improved.

Key words： honeycomb material sandwich panel ballistic impact negative Poisson’s ratio numerical simulation

收稿日期: 2022-01-17 出版日期: 2023-03-28

引用本文:

杨姝1,2，陈鹏宇1,2，江峰1,2，裴连政1,2，亓昌1,2. 内凹弧形蜂窝夹芯板低速弹道冲击试验与数值仿真[J]. 振动与冲击, 2023, 42(6): 255-262.
YANG Shu1,2, CHEN Pengyu1,2, JIANG Feng1,2, PEI Lianzheng1,2, QI Chang1,2. Low-speed ballistic impact test and numerical simulation on re-entrant circular honeycomb sandwich panels. JOURNAL OF VIBRATION AND SHOCK, 2023, 42(6): 255-262.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2023/V42/I6/255

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