Abstract
Abstract—The paper considers the effective inertial and elastic properties of a dispersive composite in the form of an elastic porous medium with empty spherical cavities. It is shown that when the translational vibrations and bulk oscillations of the cavities are in resonance, the dynamic density and compressibility of the porous medium take negative values. Estimates are presented for the internal dynamic parameters, for which the inertial and elastic properties determining the phase velocity and sound attenuation can simultaneously be negative in certain frequency ranges. The porous medium then assumes the properties of a metamaterial with negative sound refraction and other unique acoustic effects.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
