Article
Engineering, Aerospace
Yu Chen, Zhi-Wei Wang
Summary: This study proposed an improved hexagonal honeycomb structure by replacing the solid junction with a small hollow circle, resulting in a novel honeycomb. Theoretical models based on energy approach were developed to predict the elastic properties of the new honeycomb, and finite element analysis was used to verify the models and investigate the effects of micro geometrical parameters. The results showed that the new honeycomb exhibited a negative Poisson's ratio effect, higher specific Young's modulus and shear modulus compared to the common hexagonal honeycomb. It also demonstrated a more tailored anisotropy. Therefore, the new honeycomb could be an effective substitute for the common hexagonal honeycomb and provide guidance for improved design of auxetic honeycombs.
AEROSPACE SCIENCE AND TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Zijian Zhang, Li'ao Zhang, Yangyang Dong, Heng Chen, Yipan Guo
Summary: A cosine-shaped re-entrant structure negative Poisson's ratio metamaterial is proposed to address the issues of stress concentration and negative Poisson's ratio. Different configurations of improved re-entrant structural elements are designed by optimizing the inclined beams. Experimental results show that the improved structure can significantly reduce stress and increase the negative Poisson's ratio.
Article
Engineering, Mechanical
Lumin Shen, Zhonggang Wang, Xinxin Wang, Kai Wei
Summary: The mechanical properties of a vertex-based hierarchical re-entrant honeycomb structure were investigated in this study. The overlapping effect of struts on relative density was considered, the theoretical model for evaluating Young's modulus and Poisson's ratio was implemented, and the elastic properties of the structure can be designed by adjusting geometric parameters. Comparisons between different honeycomb structures suggest that embedding a re-entrant honeycomb at the vertex is an effective way to enhance elastic modulus while maintaining a negative Poisson's ratio.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2021)
Article
Chemistry, Physical
Farrukh Mustahsan, Sohaib Z. Khan, Asad A. Zaidi, Yaser H. Alahmadi, Essam R. Mahmoud, Hamad Almohamadi
Summary: This paper presents a modified re-entrant honeycomb auxetic structure and verifies its performance through analytical modeling, finite element analysis, and tensile testing. The results show that the newly added strut has a significant effect on the directional properties of the structure, and the structure exhibits high Young's modulus and negative Poisson's ratio in both loading directions, especially at low relative density.
Article
Chemistry, Physical
Jinming Lian, Zhenqing Wang
Summary: This study investigates the crushing behavior of a new honeycomb structure and discusses the effects of different gradient parameters on deformation mode and extrusion response. The results show that the influence of these parameters varies for in-plane and out-of-plane crushing of the honeycomb.
Article
Materials Science, Multidisciplinary
Yang Zhou, Yi Pan, Lin Chen, Qiang Gao, Beibei Sun
Summary: A novel auxetic honeycomb structure named re-entrant combined-wall (RCW) honeycomb is developed in this study by introducing hierarchical substructures to enhance its performance. Experimental results show that the RCW honeycomb exhibits high orthogonality, tunability, and increased crushing strength under large deformation.
MATERIALS RESEARCH EXPRESS
(2022)
Article
Mechanics
Hui Chen Luo, Xin Ren, Yi Zhang, Xiang Yu Zhang, Xue Gang Zhang, Chen Luo, Xian Cheng, Yi Min Xie
Summary: Filling slow recovery foam into re-entrant honeycombs can prevent lateral buckling, increase stiffness and energy absorption capacity, showing promising potential in protective engineering.
COMPOSITE STRUCTURES
(2022)
Article
Engineering, Civil
Lian-Zheng Pei, Chang Qi, Shu Yang, Yuan-Hang Ma, Peng-Cheng Wu
Summary: Due to the negative Poisson's ratio effect, auxetic structures like re-entrant honeycombs exhibit excellent energy absorption and force mitigation capabilities under crushing load. This study proposes a hierarchical fabrication method for metallic 3D re-entrant honeycomb and verifies its performance through experiments and numerical simulations. The results demonstrate its advantages in energy absorption, lightweight performance, and blast resistance.
THIN-WALLED STRUCTURES
(2022)
Article
Computer Science, Information Systems
Jun Zhang, Boqiang Shi, Tian Han
Summary: This paper introduces a new three-dimensional honeycomb structure with a negative Poisson's ratio. The in-plane response and energy absorption characteristics of the structure are analyzed using finite element method. The results show that the honeycomb exhibits a negative Poisson's ratio and has potential applications as an energy absorption material in the vehicle industry. The study also provides a new strategy for multi-objective optimization in mechanical structure design.
Article
Multidisciplinary Sciences
Kun Pan, Wei Zhang, Jieyu Ding
Summary: This paper investigates the application of Negative Poisson's ratio materials in the design of vibration isolation bases. The influence of the size of the negative Poisson's ratio re-entrant structure within a single structure is analyzed, and a honeycomb base with a negative Poisson's ratio re-entrant structure is designed. A new modeling method for the honeycomb base is proposed. The vibration isolation performance of the honeycomb base is evaluated, and numerical modeling is used to verify the results.
Article
Chemistry, Multidisciplinary
Xu Gao, Jiyuan Wei, Jiajing Huo, Zhishuai Wan, Ying Li
Summary: An improved re-entrant negative Poisson's ratio metamaterial combining 3D printing and machining is proposed, which exhibits superior load-carrying and vibration isolation capacity compared to traditional materials. The bandgap of the metamaterial can be easily adjusted through different assemblies, and particle damping enhances the diversity of bandgap design and improves structural damping performance. Experimental and simulation results demonstrate a 300% increase in bearing capacity compared to traditional metamaterials, and increasing the density of metal assemblies achieves a vibration-suppressing bandgap with a lower frequency and wider bandwidth.
APPLIED SCIENCES-BASEL
(2023)
Article
Engineering, Civil
Ming-Ran An, Liang Wang, Hai-Tao Liu, Fu-Guang Ren
Summary: Combining multiple structures to form honeycombs enhances energy absorption, as demonstrated by the novel bidirectional re-entrant honeycomb (BRH) design in this study. The geometric parameters influence the energy absorption capacity and negative Poisson's ratio behavior of the honeycomb structure, with the BRH showing improved plateau stress at medium and high velocities. The results suggest that honeycomb metamaterials with adjusted geometric parameters can achieve high performance structures with enhanced energy absorption capacity.
THIN-WALLED STRUCTURES
(2022)
Article
Materials Science, Multidisciplinary
Haifeng Wang, Rui Nie, Chao Zhang, Hongli Ji, Jinhao Qiu
Summary: In this paper, a bi-directional re-entrant anti-tetrachiral (BRATC) structure with negative Poisson's ratio was developed to meet the requirement in the variation of morphing wing area. The BRATC structure inherits the lightweight and out-of-plane stiffness properties of the anti-tetrachiral (ATC) structure, making it suitable for simultaneous deformation and load-bearing capability in the design of morphing wings. By relaxing the rotation constraints of the ligaments, the BRATC structure has improved deformability potential. The mechanical properties of BRATC were investigated using the finite element method and tested in a tensile experiment with additive manufacturing technology.
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2023)
Article
Construction & Building Technology
Xue Gang Zhang, Wei Jiang, Yi Zhang, Chen Luo, Xiang Yu Zhang, Dong Han, Jian Hao, Xing Chi Teng, Yi Min Xie, Xin Ren
Summary: A novel composite tube with auxetic honeycomb filler was proposed and studied for its mechanical response, deformation characteristics, and failure mechanism through experimental and numerical methods. The results showed good agreement between experimental and numerical results, and an optimized parameter solution with better energy absorption capacity was obtained through parameter analysis.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Materials Science, Textiles
Longxin Gu, Qiaoli Xu, Zhaoqun Du
Summary: This study discusses the properties of hyperelastic auxetic cellular materials with negative Poisson's ratio, highlighting the differences in behavior of various structures under different loading conditions.
JOURNAL OF THE TEXTILE INSTITUTE
(2021)
Article
Materials Science, Composites
Minghui Fu, Fengming Liu, Lingling Hu
COMPOSITES SCIENCE AND TECHNOLOGY
(2018)
Article
Engineering, Mechanical
L. L. Hu, Z. J. Wu, M. H. Fu
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2018)
Article
Instruments & Instrumentation
Bin-Bin Zheng, Ming-Hui Fu, Wei-Hua Li, Ling-Ling Hu
SMART MATERIALS AND STRUCTURES
(2018)
Article
Mechanics
L. L. Hu, M. Zh. Zhou, H. Deng
COMPOSITE STRUCTURES
(2019)
Article
Materials Science, Multidisciplinary
Qiuyun Yin, Lingling Hu, Xianqian Wu, Kailu Xiao, Chenguang Huang
COMPUTATIONAL MATERIALS SCIENCE
(2019)
Article
Engineering, Multidisciplinary
L. L. Hu, Z. R. Luo, Z. Y. Zhang, M. K. Lian, L. S. Huang
COMPOSITES PART B-ENGINEERING
(2019)
Article
Engineering, Mechanical
L. L. Hu, L. W. Xiong, T. X. Yu
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2019)
Article
Instruments & Instrumentation
Xuan Chen, Ming-Hui Fu, Ling-Ling Hu
SMART MATERIALS AND STRUCTURES
(2019)
Article
Materials Science, Multidisciplinary
Bin-Bin Zheng, Rong-Chang Zhong, Xuan Chen, Ming-Hui Fu, Ling-Ling Hu
MATERIALS & DESIGN
(2019)
Article
Mechanics
Rongchang Zhong, Minghui Fu, Qiuyun Yin, Outeng Xu, Lingling Hu
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2019)
Article
Engineering, Civil
L. L. Hu, Z. R. Luo, Q. Y. Yin
THIN-WALLED STRUCTURES
(2019)
Article
Mechanics
Rongchang Zhong, Minghui Fu, Xuan Chen, Binbin Zheng, Lingling Hu
COMPOSITE STRUCTURES
(2019)
Article
Engineering, Mechanical
Huajie Zhang, Mingzhe Zhou, Lingling Hu, Ziwen Zhang
ENGINEERING FAILURE ANALYSIS
(2020)
Article
Engineering, Mechanical
Bin-Bin Zheng, Feng-Ming Liu, Ling-Ling Hu, Ming-Hui Fu, Yu Chen
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2019)
Article
Engineering, Civil
L. L. Hu, W. K. Ye, Z. J. Wu
THIN-WALLED STRUCTURES
(2019)