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The equivalent method of double V-wing honeycombs on the in-plane dynamic impact
Journal of Reinforced Plastics and Composites ( IF 3.1 ) Pub Date : 2021-03-12 , DOI: 10.1177/0731684421990867
Yunfei Qu 1, 2 , Dian Wang 1, 2 , Hongye Zhang 1, 2
Affiliation  

The double V-wing honeycomb can be applied in many fields because of its lower mass and higher performance. In this study, the volume, in-plane elastic modulus and unit cell area of the double V-wing honeycomb were analytically derived, which became parts of the theoretical basis of the novel equivalent method. Based on mass, plateau load, in-plane elastic modulus, compression strain and energy absorption of the double V-wing honeycomb, a novel equivalent method mapping relationship between the thickness–width ratio and the basic parameters was established. The various size factor of the equivalent honeycomb model was denoted as n and constructed by the explicit finite element analysis method. The mechanical properties and energy absorption performance for equivalent honeycombs were investigated and compared with hexagonal honeycombs under dynamic impact. Numerical results showed a well coincidence for each honeycomb under dynamic impact before 0.009 s. Honeycombs with the same thickness–width ratio had similar mechanical properties and energy absorption characteristics. The equivalent method was verified by theoretical analysis, finite element analysis and experimental testing. Equivalent honeycombs exceeded the initial honeycomb in performance efficiency. Improvement of performance and weight loss reached 173.9% and 13.3% to the initial honeycomb. The double V-wing honeycomb possessed stronger impact resistance and better load-bearing capacity than the hexagonal honeycomb under impact in this study. The equivalent method could be applied to select the optimum honeycomb based on requirements and improve the efficiency of the double V-wing honeycomb.



中文翻译:

双V翼蜂窝等效作用于面内动力的方法

双V翼蜂窝状质量轻,性能高,因此可应用于许多领域。在这项研究中,通过分析得出双V翼蜂窝的体积,面内弹性模量和单位晶胞面积,这成为了新的等效方法的理论基础。基于双V型翼蜂窝的质量,平台载荷,面内弹性模量,压缩应变和能量吸收,建立了厚度-宽度比与基本参数之间映射关系的新型等效方法。等效蜂窝模型的各种尺寸系数表示为n并通过显式有限元分析方法构造。研究了当量蜂窝的力学性能和能量吸收性能,并将其与六边形蜂窝在动态冲击下进行了比较。数值结果表明,在0.009 s之前,每个蜂窝在动态冲击下均具有良好的一致性。具有相同的长宽比的蜂窝具有相似的机械性能和能量吸收特性。通过理论分析,有限元分析和实验测试验证了等效方法。等效蜂窝的性能效率超过了初始蜂窝。与最初的蜂窝相比,性能的改善和重量减轻分别达到了173.9%和13.3%。在此研究中,双V翼蜂窝比六角形蜂窝具有更强的抗冲击性和更好的承载能力。可以根据需要采用等效的方法来选择最佳的蜂窝,并提高双V翼蜂窝的效率。

更新日期:2021-03-12
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