Propagation of SH Waves through an Interface between a Phononic Crystal and a Uniform Solid

Long Sheng Ci; Gui Lan Yu

doi:10.4028/www.scientific.net/MSF.675-677.1061

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Enhanced Photocatalytic Activity of BiVO₄ for Water Oxidation by Mo Doping
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HomeMaterials Science ForumMaterials Science Forum Vols. 675-677Propagation of SH Waves through an Interface...

Propagation of SH Waves through an Interface between a Phononic Crystal and a Uniform Solid

Abstract:

The reflection and refraction of harmonic SH waves at the interface between a homogeneous solid and a one-dimensional phononic crystal is studied. The effects of wave frequencies on the refraction coefficients are investigated. The results show that for lower frequencies, most part of the energy is reflected into the homogeneous solid and that the frequency has little effects on the energy distribution at the interface. While for higher frequencies, SH waves cannot propagate in some directions because of the existence of the directional band gaps, which results in the discontinuity in the refraction coefficient curve. For waves passing through the interface, the higher the frequency is, the smaller the refraction coefficient is.