Higher‐order finite‐element analysis of topographic guides supporting elastic surface waves
Higher‐order finite‐element analysis of topographic guides supporting elastic surface waves
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DOI：
10.1121/1.1913432
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发表时间：
1973-04
影响因子：
2.4
通讯作者：
P. Lagasse
中科院分区：
文献类型：
--
作者：
P. Lagasse
本文提出了一种计算任意截面声波导本征模的方法。它是一种有限元技术，基于导波问题的变分公式。通过比较几个特定结构的数值和实验结果来评估该方法的准确性。特别地，我们描述了在宽带上具有低色散的声表面脊波导。
A method of computing the eigenmodes of acoustic waveguides of arbitrary cross section is described. It is a finite‐element technique, based on a variational formulation of the guided‐wave problem. The accuracy of the method is assessed by comparing numerical and experimental results for a few specific structures. In particular we describe an acoustic surface ridge waveguide with low dispersion over a broad band.