AI 中文总结
研究通过将同一超材料的两个单元胞耦合为双单元胞结构来产生新型超材料，在二维中研究两种耦合配置，强调保持高对称平面晶体学群，结果表明特定配置和单元胞选择可出现多个带隙，支持了超材料可由自身单元胞构建更高效版本的观点。
AI 中文摘要
本研究探讨了将属于同一机械超材料的两个单元胞耦合为双单元胞结构，如何能产生一种具有增强波衰减能力的新型超材料。对于两种超材料，在二维中研究了两种不同的单元胞耦合配置（并排和棋盘式），特别强调保持高对称平面晶体学群，以简化因几何复杂性带来的能带结构计算。结果表明，对于特定的配置和单元胞选择，会出现多个定向和/或全向带隙，其中一些带隙具有增强的衰减。通过在一维弹簧质量链上应用相同程序描述了这些带隙的出现方式。结果支持了这样的观点，即任何带隙超材料都可以有一个更高效的版本，该版本可以仅由其自身的单元胞构建而成。
英文摘要
This study investigates how the coupling of two unit cells belonging to the same mechanical metamaterial into a dual unit cell configuration, can produce a new metamaterial with enhanced wave attenuation capabilities. For two metamaterials, two different unit cell coupling configurations are examined in 2D (side by side and chessboard), with particular emphasis on maintaining a plane crystallographic group of high symmetry, in order to simplify band structure calculations given the complexity of the geometry. It is shown that for specific configurations and choices of unit cell, multiple directional and/or omnidirectional band-gaps can appear, some of which can exhibit enhanced attenuation. The way in which these band-gaps emerge is described through applying the same procedure on 1D spring mass chains. Results support the idea that any band-gap metamaterial could have a much more efficient version which can be constructed purely from its own unit cells.
