Single-phase metamaterial plates for broadband vibration suppression at low frequencies

Abstract

heavy masses, the work reported here provides a simple approach to construct low-cost structures with potential applications in aeronautic and astronautic industries for broadband vibration suppression at low frequencies.

A Review of Research on Seismic Metamaterials

“…[38] 3.9. Structure Optimization Aiming at Wide Low-frequency Bandgaps Gao et al studied platonic crystals based on lattices of cavities containing N-beam resonators and designed single-phase metamaterial plates for the suppression of low-frequency flexural waves in a broad range of frequencies, [118] as shown in Figure 30.…”

“…Reproduced with permission. [118] Copyright 2019, Academic Press Inc. Figure 31. Unit cells of the hybrid phononic crystal plates.…”

“…Although some scholars have conducted 3D structural research considering waves in any given direction, [16,24,31,32,55,61,62,108,129] most of the existing studies are based on the 2D simplified model to analyze the propagation of waves. [32][33][34][35][36][37][38][39][40][41][42][43][44][45][46][47][48][49][50]55,56,58,59,[61][62][63][64][65][66]68,70,[106][107][108]110,[112][113][114][116][117][118]…”

“…a) Resonant cavity containing a two‐beam resonator and b) scheme corresponding to a resonant cavity containing two one‐beam resonators. Reproduced with permission . Copyright 2019, Academic Press Inc.…”

“…However, the composition of the seismic waves is complex and the direction of the incident is uncertain. Although some scholars have conducted 3D structural research considering waves in any given direction, most of the existing studies are based on the 2D simplified model to analyze the propagation of waves . The ignored coupling modes outside the plane may lead to the estimation deviation of band structure.…”