Abstract
In order to overcome the influence of mass law on traditional acoustic materials and obtain a lightweight thin-layer structure which can effectively isolate the low frequency noises, a honeycomb-silicone rubber acoustic metamaterial was proposed. Experimental results show that the sound transmission loss of acoustic metamaterial in this paper is greatly higher than that of monolayer silicone rubber metamaterial. Based on the band structure, mode shape shapes, as well as the sound transmission simulation, the sound insulation mechanism of the designed honeycomb-silicone rubber structure was analyzed from a new perspective, which had been validated experimentally. Side length of honeycomb structure and thickness of the unit structure would affect sound transmission loss in damping control zone. Relevant conclusions and design method provide a new concept for engineering noise control.
| Original language | English |
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| State | Published - 2017 |
| Event | 24th International Congress on Sound and Vibration, ICSV 2017 - London, United Kingdom Duration: 23 Jul 2017 → 27 Jul 2017 |
Conference
| Conference | 24th International Congress on Sound and Vibration, ICSV 2017 |
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| Country/Territory | United Kingdom |
| City | London |
| Period | 23/07/17 → 27/07/17 |
Keywords
- Acoustic metamaterial
- Bandgap
- Low frequency sound transmission loss