标题： 通过复合弹性超材料实现纵向波的W形宽带衰减 显示英文标题

标题： W-shaped Broadband Attenuation of Longitudinal Waves through Composite Elastic Metamaterial

摘要： 我们研究了一种具有异常透射特性的复合弹性超材料薄板，特别是W形禁带的存在。一项综合研究，利用实验测量、有限元方法和分析方法，识别了这个特定的禁带。超材料薄板的设计涉及在平行排列的复合材料阵列中进行有策略的切割。这种配置确保缝隙之间的材料在周围介质中作为板状波导。将钢引入基于ABS的法布里-珀罗腔中，会在纵向波和穿过结构的局域模式之间产生显著的耦合效应，导致两个不同的法布里-珀罗谐振器的形成。这些耦合效应产生一系列谐振和反谐振，最终通过两个对称的法诺谐振的相互作用形成W形禁带。 显示英文摘要

摘要： We investigate a composite elastic meta-slab with exceptional transmission properties, particularly the presence of a W-shaped bandgap. A comprehensive study, utilizing experimental measurements, the finite element method, and an analytical approach, identifies this specific bandgap. The meta-slab design involves cutting an array of composite materials arranged in parallel with strategically placed incisions. This configuration ensures that the materials between the slits act as plate-like waveguides within the surrounding medium. The incorporation of steel into ABS-based Fabry-Perot cavities induces a notable coupling effect between longitudinal waves and localized modes traversing the structure, leading to the formation of two distinct Fabry-Perot resonators. These coupling effects generate a series of resonances and antiresonances, ultimately producing the W-band gap through the interaction of two symmetric Fano resonances.