人工晶体学报2025，Vol.54Issue(4)：581-588,8.DOI:10.16553/j.cnki.issn1000-985x.2024.0226
用多孔衬里穿孔夹层结构改善双层板的低频传声损失
Improving Low-Frequency Sound Transmission Loss of Double-Layer Panels with a Perforated Sandwich Structure with Porous Lining
摘要
Abstract
To improve the insufficient sound insulation performance of double-layer panel structures at the mass-air-mass resonance frequency,a double-layer panel acoustic metamaterial consisting of a perforated sandwich plate with a porous liner and a homogeneous plate was designed,and the normal sound transmission loss of the structure was calculated by the finite element method.The numerical results show that when the frequency of the perforated sandwich panel with porous lining is tuned to the resonance frequency of the double-layer panel panel,the reduction of the sound transmission loss caused by mass-air-mass resonance is significantly improved.At the same time,the excellent acoustic isolation performance of the conventional double-layer panel structure is maintained at high frequencies.By comparing the sound absorption coefficient and sound transmission loss of perforated sandwich panels and unperforated sandwich panels,it is found that the excellent sound transmission loss of the double-layer panel acoustic metamaterials is attributed to the sound absorption characteristics of the perforated sandwich panels,which is further verified by changing the frequency of the acoustic absorption and the acoustic properties.关键词
声学超材料/双层板/夹层结构/低频隔声/传声损失/有限元法Key words
acoustic metamaterial/double-layer panel/sandwich structure/low-frequency sound insulation/sound transmission loss/finite element method引用本文复制引用
李雯婧,田俊红,李仁生,李佳宁,孙小伟..用多孔衬里穿孔夹层结构改善双层板的低频传声损失[J].人工晶体学报,2025,54(4):581-588,8.基金项目
国家自然科学基金(12462011) （12462011）
