Study on elastic properties of re-entrant regular tetrahedral cell of novel negative poisson ratio materials

LIU Yule; DENG Xianpu; QIE Yanhui; BAN Baowang

doi:10.16579/j.issn.1001.9669.2025.06.018

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Study on elastic properties of re-entrant regular tetrahedral cell of novel negative poisson ratio materials

·Experimental Research·Testing Technology· | 更新时间：2025-06-09

- Study on elastic properties of re-entrant regular tetrahedral cell of novel negative poisson ratio materials
- Journal of Mechanical Strength Vol. 47, Issue 6, Pages: 152-158(2025)
- 作者机构：
  
  1.河北工业大学机械工程学院，天津 300401
  2.天津河工大先进装备研究院有限公司，天津 300401
  3.唐钢国际工程技术股份有限公司，唐山 063000
- 作者简介：
  
  QIE Yanhui, E-mail: qieyanhui@126.com
- 基金信息：
  
  Hebei Administration for Market Regulation Project(2018ZD13;2020ZC26);Hebei Special Equipment Supervision and Inspection Institute Science and Technology Plan(HBTJ2023CY001;HBTJ2023CY003;HBTJ2023CY004)
- DOI：10.16579/j.issn.1001.9669.2025.06.018
  CLC： TB383
- Received：26 September 2023，
  
  Revised：20 December 2023，
  
  Published：15 June 2025
- 稿件说明：
移动端阅览
刘宇乐，邓先溥，郄彦辉，等. 新型负泊松比材料内凹正四面体胞元弹性性能研究［J］. 机械强度，2025，47（6）：152-158.

LIU Yule，DENG Xianpu，QIE Yanhui，et al. Study on elastic properties of re-entrant regular tetrahedral cell of novel negative poisson ratio materials［J］. Journal of Mechanical Strength，2025，47（6）：152-158.
刘宇乐，邓先溥，郄彦辉，等. 新型负泊松比材料内凹正四面体胞元弹性性能研究［J］. 机械强度，2025，47（6）：152-158. DOI： 10.16579/j.issn.1001.9669.2025.06.018.

LIU Yule，DENG Xianpu，QIE Yanhui，et al. Study on elastic properties of re-entrant regular tetrahedral cell of novel negative poisson ratio materials［J］. Journal of Mechanical Strength，2025，47（6）：152-158. DOI： 10.16579/j.issn.1001.9669.2025.06.018.

摘要

为了提高三维负泊松比材料的力学性能，拓展负泊松比材料的应用范围。首先，通过在正四面体多孔结构的边线引入内凹角，提出了一种全新的空间负泊松比材料的单位胞元，并对其进行了7种正交各向同性和正交各向异性的增强设计。利用均匀化有限元方法和周期性边界条件研究了胞元几何参数对新型胞元和增强胞元的量纲一等效弹性模量和泊松比的影响规律，并利用3D打印的树脂试样进行了试验验证。相比已有的负泊松比材料的正方体胞元，新型胞元可在保持负泊松比特性的同时节省材料50%；

向、

向和

两向3种增强方案可在提高负泊松比特性的同时明显提高承载能力。

Abstract

In order to improve the mechanical properties of three-dimensional negative Poisson ratio materials

and expand the application of negative Poisson ratio materials. A new unit cell of negative Poisson ratio structural material was proposed by introducing internal concave angles into the edges of tetrahedral porous structures

and 7 kinds of orthogonal isotropic and orthogonal anisotropic enhancement designs were carried out on it. The influence of cell geometry parameters on the dimension one equivalent elastic modulus and Poisson ratio of new and enhanced cells was studied by using the homogenized finite element method and periodic boundary conditions， and the 3D printed resin sample was used for experimental verification. Compared with the existing negative Poisson ratio unit cells

the novel unit cell can save 50% of materials while maintaining the negative Poisson ratio characteristics. The three reinforcement schemes in

-direction

-direction and

-direction can significantly improve the bearing-load capacity while improving the negative Poisson ratio characteristics.

关键词

Keywords

references

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