We investigate one-way elastic wave propagation in 1D discretely modulated waveguides. The as-sociated Bloch diagram is computed using a generalization of the Plane Wave Expansion Method for space-time varying rods and beams. Once this new analysis tool is available, we demonstrate that discretely modulated materials support directional (non-reciprocal) and full (reciprocal) bandgaps.

Non-Reciprocal Elastic Wave Propagation Leveraging Dis-cretely Modulated Waveguides

E. Riva;G. Cazzulani;D. E. Quadrelli;F. Braghin
2019

Abstract

We investigate one-way elastic wave propagation in 1D discretely modulated waveguides. The as-sociated Bloch diagram is computed using a generalization of the Plane Wave Expansion Method for space-time varying rods and beams. Once this new analysis tool is available, we demonstrate that discretely modulated materials support directional (non-reciprocal) and full (reciprocal) bandgaps.
PHONONICS 2019: 5th International Conference on Phononic Crystals/Metamaterials, Phonon Transport and Topological Phononics
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11311/1097386
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