Chiral Seismic Attenuation with Acoustic Metamaterials

Hector Torres-Silva, Diego Torres Cabezas

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DOI: 10.4236/jemaa.2013.51003                

Abstract

We study the analogy between the linear elasticity theory equations and classical Maxwell equation with chiral effects and we propose a new method of an earthquake-resistant design to support conventional aseismic designs using acoustic metamaterials. We suggest a simple and practical method to reduce the amplitude of a seismic wave exponentially. Our device is like an attenuator of a chiral seismic wave. Constructing a cylindrical shell-type waveguide that creates a stop-band for the chiral seismic wave, we can convert the wave into an evanescent wave for some frequency range without touching the building we want to protect.

Keywords

Chiral Metamaterial; Seismic Wave; Acoustic Properties

Conflicts of Interest

The authors declare no conflicts of interest.

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