Localisation of guided wave in stratified elastic reflector sandwiched between two elastic semi-spaces

The guided shear wave localisation is considered in the problem of reflection and refraction through bi-material stratified elastic reflector perfectly sandwiched between two elastic semi-spaces. Bi-material stratified reflector consists of finite number periodically arranged and perfectly bonded el...

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Bibliographic Details
Published in:Journal of physics. Conference series 2020-02, Vol.1474 (1), p.12015
Main Authors: Ghazaryan, K B, Ghazaryan, R A, Papyan, A A, Ohanyan, S K
Format: Article
Language:English
Subjects:
Incident waves
Localization
Physics
Shear
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Summary:The guided shear wave localisation is considered in the problem of reflection and refraction through bi-material stratified elastic reflector perfectly sandwiched between two elastic semi-spaces. Bi-material stratified reflector consists of finite number periodically arranged and perfectly bonded elastic sub-layers. A shear wave incident at the interface of layer from the first semi-space will give rise to a guided wave in reflector, a reflected shear wave in the same semi-space and a refracted shear wave in the second semi-space. It is shown that guided wave amplitude is localized at the neighbourhood of the layer interface adjacent to the incidence elastic semi-space and monotonously attenuates with increasing of cell number, if the frequencies of incident wave are in the stopband ranges.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1474/1/012015