Mechanical properties of carbon fiber pyramid-honeycomb with shear strengthening design

IF 9.8 1区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composites Science and Technology Pub Date : 2025-08-13 DOI:10.1016/j.compscitech.2025.111337

Ruochen Wang , Guocai Yu , Shubin Tian , Longchao Li , Yang Jin , Lijia Feng , Linzhi Wu

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Abstract

This study designed a novel carbon fiber pyramid-honeycomb structure to enhance shear performance. Using honeycomb stretching technology, a pyramid-honeycomb preparation method combining topological deformation design was proposed. A theoretical model was established to reveal the failure mechanism and predict the strength, stiffness, and failure mode of the honeycomb. The reliability of the theoretical model was verified through results that were highly similar to those obtained from corresponding simulations and experiments. The results indicated that the shear performance of honeycomb was significantly improved while maintaining a certain level of compression performance. The extremely thin wall thickness resulted in an extremely low honeycomb density and the failure mode of the honeycomb in all experiments was buckling failure of the sidewalls. The study provides a novel idea for designing and manufacturing composite honeycomb materials in the aerospace field.

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采用剪切强化设计的碳纤维锥体蜂窝的力学性能

为了提高抗剪性能，设计了一种新型的碳纤维锥体蜂窝结构。利用蜂窝拉伸技术，提出了一种结合拓扑变形设计的金字塔蜂窝制备方法。建立理论模型，揭示蜂窝的破坏机理，预测蜂窝的强度、刚度和破坏模式。通过与相应的仿真和实验结果高度相似的结果，验证了理论模型的可靠性。结果表明：在保持一定的抗压性能的同时，蜂窝的抗剪性能得到了显著提高。极薄的壁厚导致蜂窝密度极低，所有试验中蜂窝的破坏模式均为侧壁屈曲破坏。该研究为航空航天领域复合蜂窝材料的设计与制造提供了新的思路。

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来源期刊

Composites Science and Technology 工程技术-材料科学：复合

CiteScore

16.20

自引率

9.90%

发文量

611

审稿时长

33 days

期刊介绍： Composites Science and Technology publishes refereed original articles on the fundamental and applied science of engineering composites. The focus of this journal is on polymeric matrix composites with reinforcements/fillers ranging from nano- to macro-scale. CSTE encourages manuscripts reporting unique, innovative contributions to the physics, chemistry, materials science and applied mechanics aspects of advanced composites. Besides traditional fiber reinforced composites, novel composites with significant potential for engineering applications are encouraged.