Propagation of guided elastic waves in 2D phononic crystals.
The phononic band structure of two-dimensional phononic guides is numerically studied. A plane wave expansion method is used to calculate the dispersion relations of guided elastic waves in these periodic media, including 2D phononic plates and thin layered periodic arrangements. We show that, for any guided elastic wave, Lamb or generalised Lamb modes, stop bands appear in the dispersion curves, displaying a phononic band structure in both cases.
Charles
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Institut des NanoSciences de Paris, CNRS (UMR 7588), Universités Pierre et Marie Curie et Denis Diderot, 140 rue de Lourmel, 75015 Paris, France.
Bonello
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B
Ganot
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F