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<p>Honeycomb structures have garnered significant attention due to their outstanding mechanical properties, including high strength, high stiffness, and excellent energy absorption capabilities. This paper innovatively incorporates circular arcs and support structures based on the configuration characteristics of positive and negative Poisson’s ratio cells, designing three novel circular arc honeycomb configurations and their combination forms. Specimens were fabricated using FDM technology. Through uniaxial compression and three-point bending tests, the quasi-static compression and bending properties of these structures were systematically investigated. Finite element simulations provided in-depth insights into deformation mechanisms and stress evolution during compression. Results indicate that the negative Poisson’s ratio with arc and support structure exhibits superior compressive performance, achieving a compressive ultimate strength of 2.6&#xa0;MPa and a specific energy absorption of 3815.9&#xa0;J/kg. Compared to conventional honeycomb structures, the specific energy absorption value increased by 3.15 times. Finite element analysis indicates that the arc design effectively disperses stress and enables stable progressive folding. With its high specific strength (6.9&#xa0;MPa·cm³/g), the negative Poisson’s ratio structure with arcs is suitable for lightweight applications. Bending test results show that the positive Poisson’s ratio arc structure exhibits the highest average crush force (249.1&#xa0;N) and specific energy absorption (158.8&#xa0;J/kg) due to arc-induced shear stress dispersion. Combining the three unit cells enhances the mechanical properties of individual cells, with the failure sequence of the composite structure following the strength gradient of the unit cells. This study achieves synergistic optimization of lightweighting, load-bearing, and energy-absorption performance through structural innovation combined with additive manufacturing technology. It provides valuable reference for structural design and application in aerospace, transportation, and building protection fields.</p>

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Compressive and Flexural Properties of a Novel Arc Honeycomb Structure

  • 期刊论文

  • 发表日期：

    2025年12月5日

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  • Tongtong Zheng,
  • Yuanyuan Wei,
  • Guoqian Song,
  • Can Tang,
  • Wenfeng Hao

摘要

Honeycomb structures have garnered significant attention due to their outstanding mechanical properties, including high strength, high stiffness, and excellent energy absorption capabilities. This paper innovatively incorporates circular arcs and support structures based on the configuration characteristics of positive and negative Poisson’s ratio cells, designing three novel circular arc honeycomb configurations and their combination forms. Specimens were fabricated using FDM technology. Through uniaxial compression and three-point bending tests, the quasi-static compression and bending properties of these structures were systematically investigated. Finite element simulations provided in-depth insights into deformation mechanisms and stress evolution during compression. Results indicate that the negative Poisson’s ratio with arc and support structure exhibits superior compressive performance, achieving a compressive ultimate strength of 2.6 MPa and a specific energy absorption of 3815.9 J/kg. Compared to conventional honeycomb structures, the specific energy absorption value increased by 3.15 times. Finite element analysis indicates that the arc design effectively disperses stress and enables stable progressive folding. With its high specific strength (6.9 MPa·cm³/g), the negative Poisson’s ratio structure with arcs is suitable for lightweight applications. Bending test results show that the positive Poisson’s ratio arc structure exhibits the highest average crush force (249.1 N) and specific energy absorption (158.8 J/kg) due to arc-induced shear stress dispersion. Combining the three unit cells enhances the mechanical properties of individual cells, with the failure sequence of the composite structure following the strength gradient of the unit cells. This study achieves synergistic optimization of lightweighting, load-bearing, and energy-absorption performance through structural innovation combined with additive manufacturing technology. It provides valuable reference for structural design and application in aerospace, transportation, and building protection fields.