Wave attenuation mechanism in an acoustic metamaterial with negative effective mass density

By H. H. Huang, Chin-teh Sun. 2009

376 citations recorded by the source corpus.

The wave attenuation and energy transfer mechanisms of a metamaterial having a negative effective mass density are studied. The metamaterial considered is represented by a lattice system consisting of mass-in-mass units. The attenuation of wave amplitude for frequencies in the stop band is studied from the energy transfer point of view. It is found that most of the work done by the external force on the lattice system is stored by the internal mass if the forcing frequency is close to the local resonance frequency. However, the energy stored in the internal mass is only temporary; it is taken out by the external force in the form of negative work in a cyclic manner. This behavior is utilized to design metamaterials for preventing stress waves from passing them.

Subfields: Aerospace Engineering, Biomedical Engineering, Electronic, Optical and Magnetic Materials

View Paper: https://www.semanticscholar.org/paper/af843189e118dadaa79e17d8e241ebe1dbfa7562

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In Aerospace Engineering

In Biomedical Engineering

In Electronic, Optical and Magnetic Materials

Citations in the corpus

Local resonance and Bragg bandgaps in sandwich beams containing periodically inserted resonators (2015, background): “The localized resonance of the added substructures causes energy sequestering and prohibits the propagation of incident waves [3].”
Wave propagation characterization and design of two-dimensional elastic chiral metacomposite (2011, background): “metamaterial model, Huang and Sun [28] clarified this mechanism through a periodic store-and-return process of the resonance energy in the metamaterial.”
Effective Stiffening and Damping Enhancement of Structures With Strongly Nonlinear Local Attachments study the stiffening and damping effects that local essentially nonlinear attachments (2012, methodology): “An additional metamaterial concept providing enhanced performance can be found, for example, in the work of Huang and Sun [8], who employ negative effective mass density in order to achieve wave attenuation.”