Abstract
Based on the Biot theory of sound propagation in multi-layer materials, the method of transfer matrix were used to derive the transmission loss of typical layered-structure consists of elastic solid, fluid and porous material. The influence of air layer and porous material on sound insula-tion performance of multi-layer structure have been discussed by numerical calculation. The sound insulation performance of the composite structure has been optimized in the specific fre-quency band by using genetic algorithm and transfer matrix. The results indicate that the air layer and porous materials can improve the sound insulation performance of the composite structure. The distribution of the air layer and porous materials also has great influence on the sound insulation performance.
Original language | English |
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Publication status | Published - 2017 |
Externally published | Yes |
Event | 24th International Congress on Sound and Vibration, ICSV 2017 - London, United Kingdom Duration: Jul 23 2017 → Jul 27 2017 |
Conference
Conference | 24th International Congress on Sound and Vibration, ICSV 2017 |
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Country/Territory | United Kingdom |
City | London |
Period | 7/23/17 → 7/27/17 |
ASJC Scopus Subject Areas
- Acoustics and Ultrasonics
Keywords
- Air layers
- Parameter optimization
- Porous material
- Sound transmission loss