Abstract
In this research, composite sandwich meta-panels were designed, made and tested. The vibration and explosion attenuation effects of the meta-panel were revealed by frequency sweep tests, in-field explosion experiments, and finite element modeling (FEM). Meta-panel theory was also applied to predict the dynamic behavior. The local resonance metamaterial panel shows extraordinary vibration attenuation and explosion mitigation effects. The bandwidth of the meta-panel can reach 300 Hz, and the peak displacement can be reduced to 70% or less of that of the ordinary sandwich panel. The peak strain of the facesheet is reduced as well. The research provides an experimental basis for the application of metamaterials in protective buildings.
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