复合隔声结构隔声性能分析及试验研究  

Analysis and Test of Sound Insulation Performance of Multilayer Structures

作　　者：夏兆旺 吴项君 杨淇 杨正奇 王宗耀 王一飞 XIA Zhaowang;WU Xiangjun;YANG Qi;YANG Zhengqi;WANG Zongyao;WANG Yifei(School of Energy and Power,Jiangsu University of Science and Technology,Zhenjiang 212100,Jiangsu,China;CSSC Cruise Technology Development Co.,Ltd.,Shanghai 200137,China)

机构地区：[1]江苏科技大学能源与动力学院,江苏镇江212100 [2]中船邮轮科技发展有限公司,上海200137

出　　处：《噪声与振动控制》2023年第6期129-134,141,共7页Noise and Vibration Control

基　　金：湖北省武汉市中船重工七一九研究所热能动力技术重点实验室开放基金资助项目(TPL2020A03)。

摘　　要：将隔声结构应用于机械、船舶和土木等领域,以复合隔声结构为研究对象,通过传递矩阵法推导复合隔声结构隔声量的计算方法。建立复合隔声结构的分频段仿真分析模型,研究复合隔声结构在100 Hz~5000 Hz频段内的隔声性能,并进行试验验证。研究结果表明:在100 Hz~5000 Hz频段内,仿真结果与试验结果的单值评价隔声量误差小于2.0 dB;通过对结构的优化设计,复合隔声结构可以实现面密度小于20 kg/m^(2),隔声量大于35.0 dB的综合指标;通过复合隔声结构的材料厚度和平板厚度的组合设计均可提高其隔声性能。The sound insulation structures are widely used in various fields,including machinery,ships and civil engineering,etc.Taking the composite sound insulation structure as the study object,its sound insulation calculation method was deduced using transfer matrix method.The sub-band simulation analysis model of the composite sound insulation structure was established,and its sound insulation performance in the frequency band from 100 Hz to 5000 Hz was obtained and verified by experiments.The results show that the difference between the simulation results and experimental results was less than 2.0 dB in this frequency band.After optimizing the design of the structure,the composite sound insulation structure can achieve the comprehensive indicators that the surface density is less than 20 kg/m^(2)and the sound insulation is greater than 35.0 dB.The combined design of the material thickness and the plate thickness of the composite sound insulation structure can improve the sound insulation performance.

关 键 词：声学 复合隔声结构 传递矩阵法 损耗因子 多孔材料 隔声量 

分 类 号：TU112.41[建筑科学—建筑理论]