Mechanical Engineering Faculty Research

Title

Optimizing the Band Gap of Effective Mass Negativity in Acoustic Metamaterials

Document Type

Article

Publication Date

Winter 12-10-2012

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.

Publication Title

Applied Physics Letters

Volume

101

Issue

1

First Page

241902

Last Page

241902