梁的弯曲和压缩共振引起的表面波
Surface waves from flexural and compressional resonances of beams
摘要：
我们提出了一个三维模型，描述了弹性波在土壤基底中的传播，支持一个阵列的圆柱形梁经历弯曲和压缩共振。由此产生的表面波有两种类型。在矢状面中，混合瑞利波可以传播，除了带隙内产生的弯曲和压缩共振之间的复杂的相互作用。我们展示了一个波解耦的混合瑞利波，这是电磁欺骗等离子体激元的弹性模拟。这种位移垂直于矢状面的波只对弯曲共振敏感。类似的，但数量上不同，物理学是在一个二维的设置涉及板的共振。
英文摘要：
We present a three-dimensional model describing the propagation of elastic waves in a soil substrate supporting an array of cylindrical beams experiencing flexural and compressional resonances. The resulting surface waves are of two types. In the sagittal plane, hybridized Rayleigh waves can propagate except within bandgaps resulting from a complex interplay between flexural and compressional resonances. We exhibit a wave decoupled from the hybridized Rayleigh wave which is the elastic analogue of electromagnetic spoof plasmon polaritons. This wave with displacements perpendicular to the sagittal plane is sensitive only to flexural resonances. Similar, yet quantitatively different, physics is demonstrated in a two-dimensional setting involving resonances of plates.
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