Study on the Bending Behaviors of a Novel Flexible Re-entrant Honeycomb

IF 1.5 4区 材料科学 Q3 ENGINEERING, MECHANICAL
Yang Zhou, Yi Pan, Lin Chen, Qiang Gao, Beibei Sun
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引用次数: 0

Abstract

In order to further improve the bending performance of the traditional re-entrant (RE) honeycomb, a novel auxetic honeycomb architecture, called RE-L honeycomb, was proposed by adding an additional link-wall structure to the RE cell. The bending behaviors of the novel RE-L honeycomb, including the properties under linear elastic deformation and the bending behaviors under large deformation, were comprehensively investigated by the analytical, numerical and experimental models. Results show that the proposed RE-L honeycomb significantly improves the bending compliance in the x-direction due to the highly flexible performance of the additional structure, where the bending rigidity and the maximum bending force are only 23% and 29.4% of those of the RE honeycomb, respectively. Besides, the additional structure obviously improves the designability and orthotropic property of the original auxetic honeycomb. In conclusion, the proposed RE-L shows improved bending performance, which deserves more attention in future research and related applications.
一种新型柔性凹入式蜂窝的弯曲性能研究
为了进一步提高传统凹入式(re)蜂窝的弯曲性能,通过在re蜂窝中添加额外的连接壁结构,提出了一种新型的膨胀蜂窝结构,称为re-L蜂窝。通过分析、数值和实验模型,全面研究了新型RE-L蜂窝的弯曲行为,包括线弹性变形下的性能和大变形下的弯曲行为。结果表明,由于附加结构的高度柔性性能,所提出的RE-L蜂窝显著提高了x方向的弯曲柔度,其中弯曲刚度和最大弯曲力分别仅为RE蜂窝的23%和29.4%。此外,该附加结构明显提高了原胀形蜂窝的可设计性和正交异性。总之,所提出的RE-L显示出改进的弯曲性能,这在未来的研究和相关应用中值得更多关注。
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来源期刊
CiteScore
3.00
自引率
0.00%
发文量
30
审稿时长
4.5 months
期刊介绍: Multiscale characterization, modeling, and experiments; High-temperature creep, fatigue, and fracture; Elastic-plastic behavior; Environmental effects on material response, constitutive relations, materials processing, and microstructure mechanical property relationships
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