Mechanical characteristics of composite honeycomb sandwich structures under oblique impact

IF 3.2 3区工程技术 Q2 MECHANICS

Theoretical and Applied Mechanics Letters Pub Date : 2022-09-01 DOI:10.1016/j.taml.2022.100379

Yuechen Duan , Zhen Cui , Xin Xie , Ying Tie , Ting Zou , Tingting Wang

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引用次数: 6

Abstract

Carbon fiber reinforced polymer (CFRP) and CFRP-based composite honeycomb sandwich structures are particularly sensitive to impact. The mechanical characteristics of composite honeycomb sandwich structures under oblique impact are studied by numerical simulation and experiment. The oblique impact model is established, and the reliability of the model is verified by the oblique impact test. To further analyze the influence of structural parameters on energy absorption under oblique impact, the influence of impact angle, face sheet thickness and wall thickness of the honeycomb is numerically studied. The results show that the impact angle has an important effect on energy distribution. The structural parameters also have an effect on the peak contact force, contact time, and energy absorption, and the effect is different from normal impact due to the presence of frictional dissipation energy. Compared with normal impact, the debonding of oblique impact will be reduced, but the buckling range of the honeycomb core will be expanded.

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复合材料蜂窝夹层结构斜冲击力学特性研究

碳纤维增强聚合物(CFRP)和CFRP基复合材料蜂窝夹层结构对冲击尤为敏感。通过数值模拟和实验研究了复合材料蜂窝夹层结构在斜冲击作用下的受力特性。建立了斜冲击模型，并通过斜冲击试验验证了模型的可靠性。为了进一步分析结构参数对斜冲击下吸能的影响，数值研究了冲击角度、面板厚度和壁厚对蜂窝吸能的影响。结果表明，冲击角对能量分布有重要影响。结构参数对峰值接触力、接触时间和能量吸收也有影响，并且由于摩擦耗散能的存在，这种影响与正常冲击不同。与正常撞击相比，斜撞击会减少蜂窝芯的脱粘，但会扩大蜂窝芯的屈曲范围。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Theoretical and Applied Mechanics Letters MECHANICS-

CiteScore

6.20

自引率

2.90%

发文量

545

审稿时长

12 weeks

期刊介绍： An international journal devoted to rapid communications on novel and original research in the field of mechanics. TAML aims at publishing novel, cutting edge researches in theoretical, computational, and experimental mechanics. The journal provides fast publication of letter-sized articles and invited reviews within 3 months. We emphasize highlighting advances in science, engineering, and technology with originality and rapidity. Contributions include, but are not limited to, a variety of topics such as: • Aerospace and Aeronautical Engineering • Coastal and Ocean Engineering • Environment and Energy Engineering • Material and Structure Engineering • Biomedical Engineering • Mechanical and Transportation Engineering • Civil and Hydraulic Engineering Theoretical and Applied Mechanics Letters (TAML) was launched in 2011 and sponsored by Institute of Mechanics, Chinese Academy of Sciences (IMCAS) and The Chinese Society of Theoretical and Applied Mechanics (CSTAM). It is the official publication the Beijing International Center for Theoretical and Applied Mechanics (BICTAM).