| Autor: |
YANG Wan-yu1; 2; YIN Yao1; BAI Guo-feng |
| Jazyk: |
čínština |
| Rok vydání: |
2021 |
| Předmět: |
|
| Zdroj: |
Hecheng xiangjiao gongye, Vol 44, Iss 6, Pp 438-442 (2021) |
| Druh dokumentu: |
article |
| ISSN: |
1000-1255 |
| DOI: |
10.19908/j.cnki.ISSN1000-1255.2021.06.0438 |
| Popis: |
The dynamic mechanical parameters of viscoelastic materials were optimized by the Havriliak-Negami (H-N) model and the layered medium model so as to improve the acoustic absorption performance of viscoelastic materials in low frequency.The results showed that in the range of 1 kHz and 6 kHz and under the condition of steel plate thickness of 1 cm, the complex Young′s modulus of the rubber material thickness of 5 cm could be optimized to achieve an average sound absorption coefficient of 0.9.Under the condition of the same thickness, multiple-layered rubber with different rela-xation times could be optimized to achieve more uniform and effective sound absorption performance. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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