Origami-Based Miura-Ori Metamaterial for Wave Propagation Control

Abstract A metamaterial inspired by a Miura-Ori pattern is discussed in the context of wave propagation control. The investigated metamaterial consists of two coupled Miura-Ori geometries. Our study explores the integration of lightweight resonators within the facets of the Miura-Ori pattern to create locally resonant mechanisms giving rise to bandgaps stopping wave propagation across all directions. The rigid foldable nature of Miura-Ori enables the integration of eight spider-web-like resonators per cell while ensuring the resonators’ shape and stiffness invariance for all folding angles. Through finite element modeling and experimental validation, we investigate the accuracy of the dynamic modeling and its feasibility for design purposes. The main steps of the metamaterial design are discussed: from the initial idea, to the experimental investigation, the finite element model generation, the manufacturing of the physical prototype, and the geometry optimization. A validation of the numerical results obtained via a finite element model implemented in MSC Nastran, was achieved using laser scanning vibrometry. The tested sample comprises a section of the metamaterial defined by a 4 × 4 cell configuration, containing 128 resonators.