多数円孔を有する弾性平板における曲げ波の多重散乱解析

抄録

In this study, the multiple scattering of flexural waves on a flat elastic plate with multiple circular holes is investigated based on the Mindlin plate theory. The numerical method is based on the eigenfunction expansion of the displacement potential fields and the collocation method. As an example, the transmission behavior of plane monochromatic flexural waves is analyzed in the case where circular holes are arranged in a square array. The transmission spectra for different hole radii are presented. It is shown that the stop bands appear more clearly when the holes have larger radius. The out-of-plane displacement field around the holes is demonstrated for different frequencies corresponding to the pass and stop bands.