Study on vibration transfer characteristics of acoustic supermaterial plate structure

[摘要] The problem of low frequency vibration and noise control is a huge challenge in the engineering environment. The bandgap characteristics of phononic crystals can suppress the propagation of acoustic waves and provide a new solution for low-frequency vibration and noise control. In this paper, an acoustic supermaterial structure plate is proposed. By the finite element calculation, two band gaps of 71Hz∼120Hz and 315Hz∼400Hz are obtained. Finite element method is used to analyze the variation of the transverse and longitudinal periodic number of the acoustic supermaterial plate, and the relationship between the vibration transmission characteristics and the band gap is obtained. The research shows that the number of original cells of acoustic metamaterial structural plates is at least 8.

[发布机构] School of Energy and Power, Jiangsu University of Science and Technology, Zhenjiang; 212003, China^1;Shanghai Marine Equipment Research Institute, CSIC, Shanghai; 200031, China^2

[效力级别] 无线电电子学

[关键词] Acoustic metamaterial;Engineering environment;Low-frequency vibration;Phononic Crystal;Plate structure;Structural plates;Vibration transfer;Vibration transmission