Analysis of the vibration reduction characteristics of a double-layered metamaterial panel embedded with H-shaped steel resonators

A double-layer plate design incorporating H-shaped steel resonance metamaterials is proposed to mitigate low-frequency vibrations in mechanical systems. The finite element method is used to analyze the structure's band gap characteristics and vibration transmission properties. The vibration reduction effects of the unit cell's geometric parameters are analyzed, and the double-layer metamaterial plate is optimized through the Response Surface Methodology (RSM). The structure's vibration reduction performance was examined under linear and point excitation in a low-frequency environment. The study shows that the proposed double-layer metamaterial plate has a broad low-frequency bending wave band gap. Adjusting the structure's geometric parameters allows for optimizing the band gap to target the low-frequency range. Various excitation sources are efficiently isolated by this structure, making it well-suited for low-frequency vibration reduction.