Wave motion in double-resonator metamaterials
Guanlin Li, Lifeng Wang, Yuqiang Gao and Wei Sun
Abstract: A double-resonator unit cell is designed to achieve a locally resonant bandgap in the range of low-frequency in this paper. The characteristics of the wave motion of the double-resonators periodic structures are investigated both by finite element analysis and by vibration experimental analysis. The double-resonator periodic structure is printed by a 3D printer. In the double-resonator periodic structure, the low-frequency bandgap is realized in the case of a small size with a relatively hard matrix material. Both simulated and experimental results show that the double-resonator periodic structure does ensure the realization of local resonant bandgap in the range of low-frequency. Therefore, it can be predicted that locally resonant bandgap can be realized in the range of even lower frequency by using softer materials, while the unit cells are kept in the same size.
原文链接：https://iopscience.iop.org/article/10.1088/2631-8695/ab5b79
