Optimized hexagonal perforated honeycomb–chiral metamaterial for multidirectional energy absorption

IF 7.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

International Journal of Mechanical Sciences Pub Date : 2025-06-23 DOI:10.1016/j.ijmecsci.2025.110521

Yinchuan He , Guoxing Lu , Tingting Wang , Li Wang , Kwong Ming Tse

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Abstract

This paper introduces a novel hexagonal perforated honeycomb-chiral (HPH-C) structure, achieved by integrating curved perforated rib elements into a hexagonal perforated framework. The incorporation of curved ribs forms rotating chiral units, imparting distinctive deformation characteristics under radial compression, including rotational and winding bending behaviors. This innovative structural design substantially enhances the energy absorption capacity in the radial direction. Under axial compression, the structure demonstrates pronounced negative Poisson's ratio behavior by contracting and deforming toward regions of reduced stiffness near the perforations, further augmenting its energy absorption capacity. Quantitative comparisons with the original structure indicate that while the innovative design increases weight by 107%, the specific energy absorption (SEA) under radial compression is improved by 200% and under axial compression by 111%. The proposed design approach introduces innovative strategies for achieving multidimensional impact protection in metamaterials. Leveraging the advantages of additive manufacturing, this study highlights the significant potential of perforated negative Poisson's ratio metamaterials to advance the development and application of multi-dimensional, multi-scale energy-absorbing structures in engineering fields.

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优化的六边形多孔蜂窝-多向吸能手性超材料

本文介绍了一种新型的六边形穿孔蜂窝-手性（HPH-C）结构，该结构通过将弯曲的穿孔肋单元集成到六边形穿孔框架中来实现。弯曲肋的结合形成旋转的手性单元，在径向压缩下赋予独特的变形特征，包括旋转和弯曲行为。这种创新的结构设计大大提高了径向的能量吸收能力。在轴向压缩下，结构表现出明显的负泊松比行为，向孔眼附近刚度降低的区域收缩和变形，进一步增强了其吸能能力。与原始结构的定量比较表明，创新设计在增加重量107%的同时，径向压缩比能吸收（SEA）提高了200%，轴向压缩比能吸收（SEA）提高了111%。提出的设计方法引入了创新策略，以实现多维冲击保护的超材料。利用增材制造的优势，本研究突出了多孔负泊松比超材料在推进多维、多尺度吸能结构在工程领域的开发和应用方面的巨大潜力。

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来源期刊

International Journal of Mechanical Sciences 工程技术-工程：机械

CiteScore

12.80

自引率

17.80%

发文量

769

审稿时长

19 days

期刊介绍： The International Journal of Mechanical Sciences (IJMS) serves as a global platform for the publication and dissemination of original research that contributes to a deeper scientific understanding of the fundamental disciplines within mechanical, civil, and material engineering. The primary focus of IJMS is to showcase innovative and ground-breaking work that utilizes analytical and computational modeling techniques, such as Finite Element Method (FEM), Boundary Element Method (BEM), and mesh-free methods, among others. These modeling methods are applied to diverse fields including rigid-body mechanics (e.g., dynamics, vibration, stability), structural mechanics, metal forming, advanced materials (e.g., metals, composites, cellular, smart) behavior and applications, impact mechanics, strain localization, and other nonlinear effects (e.g., large deflections, plasticity, fracture). Additionally, IJMS covers the realms of fluid mechanics (both external and internal flows), tribology, thermodynamics, and materials processing. These subjects collectively form the core of the journal's content. In summary, IJMS provides a prestigious platform for researchers to present their original contributions, shedding light on analytical and computational modeling methods in various areas of mechanical engineering, as well as exploring the behavior and application of advanced materials, fluid mechanics, thermodynamics, and materials processing.