Bandgap tunability in pantographic metamaterials via flexure-based mechanisms

Abstract

Inspired by flexure-based compliant mechanisms, we propose a novel pantographic system with broad, multiple bandgaps for wave and vibration control. This compliant mechanism embeds local inhomogeneities, such as flexure hinges, to achieve tunable bandgap properties. Using finite element analysis and Bloch’s theorem, we systematically study the bandgap properties of the pantographic lattice, including band structure diagrams, flexure hinge geometry effects, and vibration isolation in finite pantographic beam.