Dynamic characteristics of monostable acoustic metamaterial absorber
| Autor: | YANG Sen, FENG Jinqian, DANG Hui, LU Tiantian |
|---|---|
| Jazyk: | čínština |
| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Xi'an Gongcheng Daxue xuebao, Vol 36, Iss 2, Pp 136-140 (2022) |
| Druh dokumentu: | article |
| ISSN: | 1674-649X 1674-649x |
| DOI: | 10.13338/j.issn.1674-649x.2022.02.018 |
| Popis: | Given at the problem of narrow low-frequency absorption bandwidth of monostable acoustic metamaterial absorber, the Lindstedt-Poincare method was applied to investigate the vibration response and frequency amplitude response characteristics of the monostable acoustic metamaterials absorber. Under the excitation of plane wave, the displacement and frequency-amplitude response equation of the system were obtained, and the numerical simulation was carried out. The results show that the displacement response curves obtained by L-P method are in good agreement with the numerical curves obtained by Runge-Kutta method, and the weak nonlinearity leads to the narrow low-frequency absorption bandwidth of the system. Therefore, enhancing the nonlinear strength of the system can expand the low-frequency absorption broadband in the deep subwavelength scale, which provides theoretical support for the design of acoustic metamaterials. |
| Databáze: | Directory of Open Access Journals |
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