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2 Journal of Theoretical and Applied Mechanics

2 2025

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Numerical study about tension properties of novel hierarchical reentrant honeycomb structure

Wu Dongquan, Xu Zhenyi, Yuan Zhuo, Yupeng Li, Liu Zixiang, Zhang Zhiqiang

Journal of Theoretical and Applied Mechanics

2025

Vol. 63 nr 2

217--226

This study designed and analyzed three novel hierarchical reentrant honeycomb structures, composed of nested subunits with varying Poisson’s ratio characteristics, to evaluate their tensile performance through simulations and experiments. The results show that all three structures exhibit the negative Poisson’s ratio under tensile loading in both axial directions, with the subunits’ Poisson’s ratios influencing the overall Poisson’s ratio of the structure. The CH structure demonstrates higher stiffness under Y -axis loading, while the SRH structure exhibits higher stiffness under X-axis loading. In terms of deformation, the CH structure shows greater flexibility compared to the other two. The SRH structure consistently maintains an intermediate tensile strength among the three.

Investigation of out-of-plane compression mechanical property for novel hierarchical reentrant honeycomb structures

Wu Dongquan, Xu Zhenyi, Yuan Zhuo, Li Yupeng, Zhang Zhiqiang

Journal of Theoretical and Applied Mechanics

2025

Vol. 63 nr 1

3--12

In this study, three novel types of hierarchical reentrant honeycomb structures were designed, which comprised subunits with a semi-reentrant, reentrant, and hexagonal honeycomb. These subunits exhibited zero/negative/positive Poisson’s ratios, respectively. Geometric relationships of those structures were established. The out of plane compression behavior and deformation characteristics were investigated through finite element simulations and experiments. It was showed that the hierarchical structure composed of reentrant subunits had the best mechanical properties among three structures. The hierarchical structure composed of the classic hexagonal honeycomb subunit exhibited plastic deformation characteristic spreading from the middle and upper layers to the whole region during compression.