层级尺寸比对自相似层级蜂窝材料面内冲击力学性能的影响

赵蓉1, 刘颖2, 张海强1, 吴鹤翔1

振动与冲击 ›› 2025, Vol. 44 ›› Issue (11) : 61-69.

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振动与冲击 ›› 2025, Vol. 44 ›› Issue (11) : 61-69.
冲击与爆炸

层级尺寸比对自相似层级蜂窝材料面内冲击力学性能的影响

  • 赵蓉1,刘颖2,张海强1,吴鹤翔*1
作者信息 +

Effects of hierarchical size ratio on in-plane impact mechanical properties of self-similar hierarchical honeycomb material

  • ZHAO Rong1, LIU Ying2, ZHANG Haiqiang1, WU Hexiang*1
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摘要

为了探索层级蜂窝材料的最优层级尺寸比,提高层级蜂窝材料的能量吸收性能。基于经典蜂窝材料,并以自相似蜂窝代替蜂窝壁的方式建立了分层级蜂窝材料模型。采用数值模拟方法研究了不同冲击速度条件下,自相似层级蜂窝材料的变形模式、破碎力和能量吸收特性,重点讨论了层级尺寸变化对自相似层级蜂窝材料面内动态破碎行为的影响。研究结果表明,自相似层级蜂窝材料比蜂窝材料的力学性能和能量吸收能力优异。自相似层级蜂窝材料的破碎力随着层级尺寸比的增加呈现出先增大后减小的变化趋势。H-18型自相似层级蜂窝材料的破碎力最大,在低速冲击条件下,H-18型自相似层级蜂窝材料比H-0型蜂窝材料的平均破碎力高600%。此外,层级尺寸比不同,自相似层级蜂窝材料自适应冲击速度变化的能力不同,且给出了最优层级尺寸,为层级蜂窝材料的系统研究和应用提供了理论基础。

Abstract

To explore the optimal hierarchical size ratio of hierarchical honeycomb materials and enhance the energy absorption performance of hierarchical honeycomb materials, a hierarchical honeycomb material model was established based on classical honeycomb materials by replacing the honeycomb walls with self-similar honeycombs, the deformation mode, crushing force, and energy absorption characteristics of self-similar hierarchical honeycomb materials under different impact velocities were investigated numerically. The influence of hierarchical size variations on the in-plane dynamic crushing behavior of self-similar hierarchical honeycomb materials was discussed in detail. The research results indicate that the mechanical properties and energy absorption capacity of self-similar hierarchical honeycomb materials are superior to those of honeycomb materials. The crushing force of self-similar hierarchical honeycomb materials exhibits a trend of increasing initially and then decreasing with the increase of the hierarchical size ratio. The H-18 type of self-similar hierarchical honeycomb material has the maximum crushing force. Under low-speed impact conditions, the average crushing force of the H-18 type of self-similar hierarchical honeycomb material is 600% higher than that of the H-0 type of honeycomb material. Furthermore, the ability of self-similar hierarchical honeycomb materials to adapt to changes in impact velocity varies with different hierarchical size ratios, and the optimal hierarchical size is presented, providing a theoretical foundation for the systematic research and application of hierarchical honeycomb materials.

关键词

蜂窝材料 / 自相似 / 层级尺寸 / 面内冲击 / 能量吸收

Key words

honeycomb materials / self-similar / hierarchy size / in-plane impact / energy absorption

引用本文

导出引用
赵蓉1, 刘颖2, 张海强1, 吴鹤翔1. 层级尺寸比对自相似层级蜂窝材料面内冲击力学性能的影响[J]. 振动与冲击, 2025, 44(11): 61-69
ZHAO Rong1, LIU Ying2, ZHANG Haiqiang1, WU Hexiang1. Effects of hierarchical size ratio on in-plane impact mechanical properties of self-similar hierarchical honeycomb material[J]. Journal of Vibration and Shock, 2025, 44(11): 61-69

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