Optimizing the band gap of effective mass negativity in acoustic metamaterials
Journal
Applied Physics Letters
Journal Volume
101
Journal Issue
24
Date Issued
2012
Author(s)
Abstract
A dual-resonator microstructure design is proposed for acoustic metamaterials to achieve broadband effective mass negativity. We demonstrate the advantage of acoustic wave attenuation over a wider frequency spectrum as compared to the narrow band gap of a single-resonator design. We explicitly confirm the effect of negative effective mass density by analysis of wave propagation using finite element simulations. Examples of practical application like vibration isolation and blast wave mitigation are presented and discussed.
SDGs
Type
journal article