期刊
JOURNAL OF VIBRATION AND CONTROL
卷 29, 期 21-22, 页码 4924-4934出版社
SAGE PUBLICATIONS LTD
DOI: 10.1177/10775463221126930
关键词
beam-type metastructure; double-sides inertial amplified resonators; broadband flexural wave attenuation; low-frequency; spectral element method
In this study, we present a theoretical investigation on the flexural wave propagation and vibration attenuation characteristics in a Euler-Bernoulli beam-type metastructure with double-sides inertial amplified resonators. The results show that the proposed beam-type metastructures can achieve broadband low-frequency flexural wave attenuation, and the flexural wave band gap can be effectively modulated and optimized by changing the system parameters.
We present the theoretical investigation on the flexural wave propagation and vibration attenuation characteristics in a Euler-Bernoulli beam-type metastructure with double-sides inertial amplified resonators. Based on Bloch theory, the dispersion relation and propagation characteristics of flexural waves are calculated by the spectral element method. The influences of system parameters on the flexural wave attenuation of the proposed beam-type metastructures are analyzed. Results show that broadband low-frequency flexural wave attenuation can be achieved by the proposed double-sides beam-type metastructures. The tunability of flexural wave band gap and vibration suppression performance significantly enhances. In addition, the low-frequency flexural wave band gap can be effectively modulated and optimized by changing the system parameters.
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