Study on mechanical property of internal concave angle honeycomb structure with negative Poisson ratio
·Design·Calculation·|更新时间:2025-07-10
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Study on mechanical property of internal concave angle honeycomb structure with negative Poisson ratio
Journal of Mechanical StrengthVol. 47, Issue 7, Pages: 135-143(2025)
作者机构:
1.广西大学 机械工程学院 广西高校现代设计与先进制造重点实验室,南宁 530004
2.北部湾大学 机械与船舶海洋工程学院,钦州 535011
3.广西机电职业技术学院 先进制造技术学院,南宁 530007
作者简介:
ZHENG Zhanguang, E-mail: zhenglight@126.com
基金信息:
National Natural Science Foundation of China(52265018;51675110);Guangxi Natural Science Foundation(2021GXNSFAA220119);Liuzhou City Science and Technology Planning Project(2022ABA0101)
Negative Poisson ratio structures are widely applied in various engineering fields due to their excellent mechanical properties. By combining the star-shaped honeycomb structure with the re-entrant structure
a novel re-entrant angle-type negative Poisson ratio honeycomb structure is proposed. Firstly
the unit cell structure was simplified and analyzed based on symmetry
and the analytical expressions for the Poisson ratio and equivalent elasticity modulus of the structure were derived using the energy method. Secondly
the vertical compressive mechanical properties of the structure were investigated using Abaqus finite element software
and the numerical simulation results were compared with the theoretical calculations to validate the accuracy of the analytical expressions. Finally
the influence of different geometric parameters of the unit cell structure on the equivalent Poisson ratio and equivalent elasticity modulus was discussed
and the equivalent mechanical properties of the structure were compared with those of conventional star-shaped honeycomb structures. The results demonstrate that the proposed structure exhibits favorable negative Poisson ratio characteristics
and its equivalent mechanical properties can be adjusted by modifying the geometric parameters. The findings provide valuable insights for the design of novel negative Poisson ratio metamaterials.
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references
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