Seismic Waveguide of Metamaterials
Sang-Hoon Kim,Mukunda P. Das +1 more
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TLDR
In this article, a cylindrical shell-type waveguide composed of many Helmholtz resonators was constructed to convert a seismic wave into an attenuated one without touching the building that they want to protect.Abstract:
We developed a new method of an earthquake-resistant design to support conventional aseismic system using acoustic metamaterials. The device is an attenuator of a seismic wave that reduces the amplitude of the wave exponentially. Constructing a cylindrical shell-type waveguide composed of many Helmholtz resonators that creates a stop-band for the seismic frequency range, we convert the seismic wave into an attenuated one without touching the building that we want to protect. It is a mechanical way to convert the seismic energy into sound and heat.read more
Citations
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Acoustic metamaterial plates for elastic wave absorption and structural vibration suppression
Hao Peng,P. Frank Pai +1 more
TL;DR: In this paper, the authors present the design and modeling techniques and design guidelines of acoustic metamaterial plates for elastic wave absorption and structural vibration suppression, and reveal the actual working mechanism.
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Acoustic multi-stopband metamaterial plates design for broadband elastic wave absorption and vibration suppression
TL;DR: In this paper, an acoustic multi-stopband metamaterial plate is designed by integrating two-degree of freedom (DOF) mass-spring subsystems with an isotropic plate to act as vibration absorbers.
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Reprogrammable phononic metasurfaces
TL;DR: A metamaterial plate is realized that can be dynamically tuned by harnessing geometric and magnetic nonlinearities in the individual unit cells and can control the amplitude of transmitted excitation through the plate over three orders of magnitude.
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3D auxetic single material periodic structure with ultra-wide tunable bandgap.
TL;DR: In this work, auxeticity and phononic crystals bandgap properties are properly combined to obtain a single phase periodic structure with a tridimensional wide tunable bandgap.
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Seismic metamaterials based on isochronous mechanical oscillators
Giovanni Finocchio,Orazio Casablanca,Giuseppe Ricciardi,Umberto Alibrandi,F. Garescì,Massimo Chiappini,Bruno Azzerboni +6 more
TL;DR: In this paper, a seismic metamaterial (SM) composed by a chain of mass-in-mass system able to filter the S-waves of an earthquake is introduced. And the effect of the SM into the mono dimensional model for the soil response analysis.
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