China Mechanical Engineering ›› 2024, Vol. 35 ›› Issue (12): 2268-2279.DOI: 10.3969/j.issn.1004-132X.2024.12.020

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Design and Performance Regulation of Discretely Assembled Octahedral Metamaterials

FU Junjian1,2,4;MENG Yonggen1;WU Haihua1;HU Huan3;LI Xiang1,2;ZHOU Xiangman1   

  1. 1.College of Mechanical & Power Engineering,China Three Gorges University,Yichang,
    Hubei,443002
    2.Hubei Key Laboratory of Hydroelectric Machinery & Maintenance,Yichang,Hubei,443002
    3.HXF Saw Co.,Ltd,Yichang,Hubei,443003
    4.State Key Laboratory of Intelligent Manufacturing Equipment and Technology,Wuhan,430074
  • Online:2024-12-25 Published:2025-01-17

离散组装八面体超材料设计与性能调控

付君健1,2,4;蒙永根1;吴海华1;胡欢3;李响1,2;周祥曼1,2   

  1. 1.三峡大学机械与动力学院,宜昌,443002
    2.水电机械设备设计与维护湖北省重点实验室,宜昌,443002
    3.黑旋风锯业股份有限公司,宜昌,443003
    4.智能制造装备与技术全国重点实验室,武汉,430074

  • 作者简介:付君健,男,1987年生,讲师。研究方向为结构拓扑优化、超构材料设计、结构缺陷识别。发表论文20余篇。E-mail:fjj@ctgu.edu.cn。
  • 基金资助:
    智能制造装备与技术全国重点实验室开放课题(IMETKF2023016)

Abstract: To address the limitations imposed by manufacturing processes on the large-scale applications of octahedral metamaterials, a discrete assembly design and performance control method for octahedral metamaterials was proposed. Firstly, the traditional three-dimensional octahedral metamaterial was disassembled into two-dimensional modular units, which were assembled into three-dimensional octahedral metamaterials and periodically extended structures using stable and easily disassembled bolt connections, and a parametric form of the discrete assembly design model was derived. Secondly, the mechanics characteristics of the modular unit structure were analyzed, and finite element analysis was employed to verify the mechanics performance of the discrete assembly model. Finally, based on digital coding and employing a third-order Rubiks Cube arrange cube array, a method for performance regulation was proposed to optimize the performance differences in the orthogonal directions of the discrete assembly octahedral metamaterials. The results demonstrate that the manufacturing and extension forms of octahedral metamaterials are enriched by the discrete assembly design facilitated by bolt connections. The performance deviation resulting from the discrete assembly design is effectively addressed by the third-order Rubiks Cube model of regulation, providing an innovative solution for achieving low-cost manufacturing and facilitating the large-scale applications of octahedral metamaterials.

Key words: octahedral metamaterial, discrete assembly, performance regulation, digital encoding, finite element simulation

摘要: 为解决八面体超材料大规模应用受制备工艺限制的问题,提出了一种八面体超材料离散组装设计与性能调控方法。首先将传统三维八面体超材料分解为二维模块化片体结构,采用稳定、易拆装的螺栓连接方式组装成三维八面体超材料及周期性扩展结构,并推导了离散组装设计模型的参数化形式。然后分析了模块化片体结构的力学特性,采用有限元分析方法验证了离散组装模型的力学性能。最后,提出了基于数字编码思想的三阶魔方排布性能调控方法,对离散组装八面体超材料正交方向的性能差异进行了优化。研究结果表明,基于螺栓连接的离散组装设计丰富了八面体超材料的制造和扩展形式,三阶魔方调控模型效解决了离散组装设计带来的性能偏差,为八面体超材料的低成本制造和大规模应用提供了创新解决方案。

关键词: 八面体超材料, 离散组装, 性能调控, 数字编码, 有限元仿真

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