Dynamics of Coupled Metamaterials: Acoustic Black Hole, Local Resonator & Multistable Oscillator

TL;DR

This paper explores how coupled metamaterials, including acoustic black holes and local resonators, can be used to control vibrations and wave propagation, and investigates nonlinear oscillators in a 1D chain for advanced vibration attenuation.

Contribution

It introduces a combined analysis of wave dynamics in coupled metamaterials and the behavior of multistable nonlinear oscillators within a 1D metamaterial chain.

Findings

Wave propagation is significantly affected by acoustic black holes and local resonators.

Multistable oscillators enable complex vibration control in metamaterials.

Metamaterials can be designed to achieve targeted vibration attenuation.

Abstract

Vibration attenuation has played a crucial role in engineering structure, wherein metamaterials have found escalated usage. These structures can be cleverly built to be lightweight and have negative mass properties, which can attenuate waves at specific frequency bands. The first part studies wave propagation in meta-beam with coupled acoustic black holes and local resonators, whereas the second part discusses multi-stable nonlinear oscillators in a 1D metamaterial chain.