Steering in-plane shear waves with inertial resonators in platonic crystals

Abstract : Numerical simulations shed light on control of shear elastic wave propagation in plates structured with inertial resonators. The structural element is composed of a heavy core connected to the main freestanding plate through tiny ligaments. It is shown that such a configuration exhibits a complete band gap in the low frequency regime. As a byproduct, we further describe the asymmetric twisting vibration of a single scatterer via modal analysis, dispersion, and transmission loss. This might pave the way to functionalities such as focusing and self-collimation in elastic plates.
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Submitted on : Saturday, March 5, 2016 - 8:11:43 PM
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Younes Achaoui, Andre Diatta, Sébastien Guenneau. Steering in-plane shear waves with inertial resonators in platonic crystals . Applied Physics Letters, American Institute of Physics, 2015, 106 (223502), pp.4. ⟨10.1063/1.4922187⟩. ⟨hal-01283633⟩

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