• Accepted Paper

Dynamic cloaking in thin elastic plates: A metamaterial design methodology based on geometric transformation

Léo Pradier, Kévin Billon, Baptiste Chomette, Manuel Collet, and Arnaud Hubert

Phys. Rev. Applied - Accepted 14 September, 2026

DOI: https://doi.org/10.1103/v7yk-qtjp

Abstract

Since the first proofs of concept in electromagnetics concerning the possibility of invisibilizing the presence of an inclusion in a field, a considerable amount of research has been carried out with the objective of generalizing these properties for other physics. The case of waves in elastic solids is still an open problem, since it has been shown that traditional theory cannot be applied to this more complex type of wave propagation. We propose a design methodology still based on the geometrical transformation initially used, no longer with the aim of transforming the governing equation of Kirchhoff-Love plates but with the aim of generating curved waveguides forcing bending waves to propagate in the direction advocated by the preliminary idea of cloaking. Numerical results show that the resulting metamaterial is capable of making an inclusion invisible over a wide frequency band for an unidirectional incident wave. In addition to the numerical results, we provide results from experiments conducted on the manufactured cloak, confirming the relevance of the proposed design.

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