To address the limitations imposed by manufacturing processes on the large-scale appli-cations of octahedral metamaterials,a discrete assembly design and performance control method for octahedral metamaterials was proposed.Firstly,the traditional three-dimensional octahedral metama-terial was disassembled into two-dimensional modular units,which were assembled into three-dimen-sional octahedral metamaterials and periodically extended structures using stable and easily disassem-bled bolt connections,and a parametric form of the discrete assembly design model was derived.Sec-ondly,the mechanics characteristics of the modular unit structure were analyzed,and finite element a-nalysis 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 direc-tions of the discrete assembly octahedral metamaterials.The results demonstrate that the manufactur-ing and extension forms of octahedral metamaterials are enriched by the discrete assembly design facil-itated 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.
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
Key words
octahedral metamaterial/discrete assembly/performance regulation/digital enco-ding/finite element simulation
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