Open AccessOptimal Design of Sound Insulation Frequency Band of Local Resonance Membrane Material
Author(s) -
Jian Zhang,
Qing Zhou,
Wang De-shi,
Shengyao Gao
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1670/1/012025
Subject(s) - soundproofing , acoustics , coupling (piping) , materials science , vibration , membrane , resonance (particle physics) , frequency band , audio frequency , low frequency , frequency spectrum , sound (geography) , sound pressure , composite material , engineering , physics , electrical engineering , chemistry , telecommunications , atomic physics , biochemistry , antenna (radio) , spectrum analyzer
In order to broaden the sound insulation frequency band of local resonance membrane materials, established an acoustic-vibration coupling model of multilayer membrane materials, based on the derived analytical solutions of the coupling equations. Simulate the sound insulation performance of the designed single-layer membrane materials with four different mass structures. Then combine different membrane materials to analyse the changes in the sound insulation frequency band. Calculations proves that: (1) The four single-layer membrane structures have a maximum TL peak of 40.08dB and the frequency of the smallest TL peak is at 204.56Hz in the frequency range of 100-1000Hz.(2) Combination of two same structures will significantly increase the sound insulation at the sound insulation peak;(3) The combination of single-layer membrane with different structures can broaden the sound insulation frequency band and enhance the sound insulation performance.