Open AccessAnalysis of the influence of oscillator stiffness parameters on vibration transmission characteristics of Drude model acoustic metamaterial with series double harmonic oscillators
Author(s) -
Shi Huijie,
Ming Gao,
Hu Enxin,
Yan Dongfu,
Zhiyuan Zhang,
Du Li
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1965/1/012052
Subject(s) - metamaterial , vibration , acoustics , harmonic oscillator , harmonic , band gap , frequency band , transmission (telecommunications) , physics , condensed matter physics , optics , electrical engineering , engineering , telecommunications , quantum mechanics , bandwidth (computing)
For a kind of acoustic metamaterial with special microstructure and attenuation band gap, the vibration transmission characteristics of five period Drude system with series double harmonic oscillators are analysis to uncover the widening band gap method. The harmonic oscillator stiffness parameters are changed to expand the range of band gap width. The increase of parameter k 1 will widen the high frequency band gap width, and the increase of k 2 will widen the low frequency band gap width. In band gap region, under the steady state, the first harmonic oscillator in five period motion direction will change from consistent to inconsistent as the parameter k 1 change. The conclusion in pass band region is similar. The research provides technical approach for promoting the development of vibration and noise control in engineering.