Acta Physica Sinica, Journal Year: 2024, Volume and Issue: 73(22), P. 224602 - 224602

Published: Jan. 1, 2024

Advanced vibration control technology is widely needed in the fields of aerospace and shipbuilding. Currently, separate absorption isolation design most systems are separated, existing designs cannot effectively enhance low-frequency line spectra. There an urgent need to develop integrated strengthen spectrum control. In response this need, paper focuses on a typical Euler beam investigation propagation characteristics vibrations transverse direction longitudinal direction, principles design, synergistic regulation bandgaps, based acoustic metamaterial bandgap wave-insulating configurations analytical methods. Ultimately, without adding additional structures, device used generate multiple modes simultaneously, achieving low-frequency, broadband, high-efficiency design. This method achieves broadband path while also introducing local resonance bandgaps that significantly improve isolation. (forward propagation) path, addition near-zero Bragg multilayer isolators multimodal resonant effective entire frequency range. elucidates modulation showing by superimposing these impressive ratio 87.3% below 100 Hz across range can be achieved. Furthermore, entity structure designed, accuracy results verified using finite element method. The findings provide feasible ideas for realizing complex structures such as beams, plates, pipelines, frames.

Language: Английский