力学性能可调的可逆装配力学超材料性能表征

吴琪; 杨宇; 芦奕菲; 鲍盘盘; 王志刚

doi:10.16579/j.issn.1001.9669.2025.01.011

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力学性能可调的可逆装配力学超材料性能表征

·实验研究·测试技术· | 更新时间：2025-01-23

- 力学性能可调的可逆装配力学超材料性能表征
- Characterization of a reversible-assembly mechanical metamaterial with an adjustble mechanical property
- 机械强度 2025年47卷第1期页码：92-106
- 作者机构：
  
  1.中国飞机强度研究所强度与结构完整性全国重点实验室，西安 710065
  2.北京航空航天大学航空科学与工程学院，北京 100191
- 作者简介：
  
  吴琪，女，1996年生，陕西渭南人，硕士研究生，助理工程师；主要研究方向为智能材料与结构设计；E-mail：wuqi@hnu.edu.cn。
- 基金信息：
  
  领先创新力基金项目(BYST-LXCX-22-054)
- DOI：10.16579/j.issn.1001.9669.2025.01.011
  中图分类号： V211
- 纸质出版日期：2025-01-15，
  
  收稿日期：2023-03-08，
  
  修回日期：2023-04-22，
- 稿件说明：
移动端阅览
吴琪, 杨宇, 芦奕菲, 等. 力学性能可调的可逆装配力学超材料性能表征[J]. 机械强度, 2025,47(1):92-106.

WU QI, YANG YU, LU YIFEI, et al. Characterization of a reversible-assembly mechanical metamaterial with an adjustble mechanical property. [J]. Journal of mechanical strength, 2025, 47(1): 92-106.
吴琪, 杨宇, 芦奕菲, 等. 力学性能可调的可逆装配力学超材料性能表征[J]. 机械强度, 2025,47(1):92-106. DOI： 10.16579/j.issn.1001.9669.2025.01.011.

WU QI, YANG YU, LU YIFEI, et al. Characterization of a reversible-assembly mechanical metamaterial with an adjustble mechanical property. [J]. Journal of mechanical strength, 2025, 47(1): 92-106. DOI： 10.16579/j.issn.1001.9669.2025.01.011.

摘要

点阵结构因其高比强度和比刚度成为航空、航天、汽车等领域的研究热点。增材制造技术的发展使得具有复杂几何外形和特殊力学性能的力学超材料点阵结构的加工成为可能。但传统增材制造工艺难以协调此类结构在成本、几何尺寸和精度之间的矛盾。鉴于此，提出了一种可逆装配的力学超材料结构概念及基础体素结构的连接方法，可有效克服制造装备的尺寸限制，并可以通过不同排列组合构建力学性能丰富的宏观点阵结构。针对可逆装配的基础体素型式，通过参数化建模的方法分析了体素几何特征、相对密度和体素数目等参数对其力学性能的影响，并与实验结果进行了对比。结果表明，所提出的3种基础体素刚性差异较大，泊松比覆盖了由负到正的范围。因此，使用这3种基础体素的不同组合方式可以产生不同力学性能分布的宏观结构，从而证明了采用这3种体素作为可逆装配结构基本体素的合理性。此外，所给出的几何尺寸与力学性能之间的数学关系可为此类力学超材料的工程应用提供指导。

Abstract

Lattice structures have become a research highlight in the fields of aviation

aerospace and automobile because of its high specific strength and stiffness. The development of additive manufacturing technology makes it possible to manufacture mechanical metamaterials with complex geometric shapes and special mechanical properties. However

traditional additive manufacturing processes are difficult to coordinate the contradiction between the cost

geometric size and accuracy of such structures.In view of this

a mechanical metamaterial structure concept of reversible assembly and the connection method of its basic voxels were proposed

which can effectively overcome the size limitation of manufacturing equipment

and can construct a macro lattice structure with rich mechanical properties through different combination sequences. Aiming at the basic voxel type of reversible assembly

the influence of voxel geometric parameters

relative density and voxel numbers on its mechanical properties through parametric modeling method was analyzed

and the experimental results were compared. The results show that the three basic voxels have great rigidity difference

and Poisson’s ratio covers the range from negative to positive.Therefore

different combination sequences of these three basic voxels can produce macro structures with different mechanical property distributions

which proves the rationality of using these three basic voxels as the basic voxels of the reversible-assembly structure.In addition

the mathematical relationship between geometric parameters and mechanical properties can provide guidance for the engineering application of such mechanical metamaterials.

关键词

可逆装配力学超材料参数化建模点阵结构性能表征

Keywords

Reversible assemblyMechanical metamaterialsParametric modelingLattice structurePerformance characterization

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