Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Elastic Wave Propagation Control in Porous and Finitely Deformed Locally Resonant Nacre-Like Metamaterials

Version 1 : Received: 19 December 2023 / Approved: 20 December 2023 / Online: 20 December 2023 (10:56:29 CET)

A peer-reviewed article of this Preprint also exists.

De Maio, U.; Greco, F.; Nevone Blasi, P.; Pranno, A.; Sgambitterra, G. Elastic Wave Propagation Control in Porous and Finitely Deformed Locally Resonant Nacre-like Metamaterials. Materials 2024, 17, 705. De Maio, U.; Greco, F.; Nevone Blasi, P.; Pranno, A.; Sgambitterra, G. Elastic Wave Propagation Control in Porous and Finitely Deformed Locally Resonant Nacre-like Metamaterials. Materials 2024, 17, 705.

Abstract

Recent studies have shown that the mechanical properties of bioinspired periodic composite materials can be strongly influenced by finite deformation effects, leading to highly nonlinear static and dynamic behaviors at multiple length scales. For instance, in porous periodic nacre-like microstructures, microscopic and macroscopic instabilities may occur for a given uniaxial loading process and, as a consequence, wave attenuation properties may evolve as a function of the microstructural evolution, giving it the designation of metamaterials. The numerical outcomes provide new opportunities to design bioinspired soft composite metamaterials characterized by high deformability and enhanced elastic wave attenuation capabilities given by the insertion of voids and lead cores.

Keywords

Bioinspired materials; Bloch wave analysis; Nonlinear homogenization; Band gap; Locally resonant; Metamaterials; Instability; Finite deformations

Subject

Engineering, Civil Engineering

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