| Autor: |
Jovanoska, Milica, Samardzioska, Todorka |
| Předmět: |
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| Zdroj: |
INTER-NOISE & NOISE-CON Congress & Conference Proceedings; 2023, Vol. 265 Issue 1, p1-11, 11p |
| Abstrakt: |
Lightweight partition walls are widely used in buildings, especially nowadays when sustainability is of a major interest. At the same time noise pollution is becoming a growing problem across the globe, as a result of the life dynamics. All this implies the need to find possible solutions for sound insulation enhancement of the lightweight partitions. This paper is focused on exploring the possibilities of exploiting the dynamic effects of periodic subwavelength arrays of resonators for sound insulation improvements. It can be shown that the resonance mode of the resonators couples with the plate vibration in the way of breaking the mass law and overcoming some phenomena like coincidence effect, mass-air-mass resonance, etc. In order to improve the sound transmission loss in a specific frequency region, periodic resonant units are tuned and introduced to single and double panels. The investigation of considered panels under acoustic field excitation is conducted using different methods. Sound transmission loss curves and dispersion diagrams are calculated. Finite element method is employed for this purpose, but also the theory of elasticity and well-known transfer matrix method (TMM). Several designs of resonators are proposed. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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