微纳米多孔梯度材料噪声控制效果仿真及试验  

Simulation and Experimental Analysis on Noise Control Effect ofMicro-nano Porous Gradient Acoustic Materials

作　　者：杨坤 张航[2] 张玮 YANG Kun;ZHANG Hang;ZHANG Wei(Naval Research Institute,Beijing 100161,China;Harbin Engineering University,Harbin 150001,China)

机构地区：[1]海军研究院,北京100161 [2]哈尔滨工程大学,哈尔滨150001

出　　处：《船海工程》2022年第3期56-59,66,共5页Ship & Ocean Engineering

摘　　要：为实现船舶舱室噪声的有效控制,基于统计能量分析法,针对某船舶典型舱室,对比舱室无敷设、敷设传统超细玻璃棉及微纳米多孔梯度材料时,典型风机激励下舱室的噪声;为更好地验证微纳米多孔材料声学性能,进行3种工况模型试验,分析各材料不同频段的隔声性能,结果表明,典型风机激励下舱室敷设微纳米多孔梯度材料较敷设传统超细玻璃棉具有更好的噪声控制效果,在20~8 kHz频段内,微纳米多孔梯度材料全频段内隔声量相比传统材料总级可提高3.1 dB,且在中低频段范围内,舱室噪声控制效果显著。Aiming at the problem of effective noise control in ship cabins,based on the statistical energy analysis(SEA)method,the effect of micro-nano porous gradient materials on the noise control in a typical ship cabin was investigated under typical fan excitation.In order to better verify the acoustic performance of micro-nano porous materials,model tests under three working conditions were carried out,and the influence of different frequency bands on the sound insulation performance of each material was analyzed.The results showed that the micro-nano porous gradient material has better noise control effect than the traditional ultra-fine glass wool in the cabin under the typical fan excitation.In the 20~8 kHz frequency band,the total sound isolation of the micro-nano porous gradient material in the whole frequency band can be increased by 3.1 dB compared with the traditional material,and the cabin noise control effect is remarkable in the middle and low frequency band.

关 键 词：微纳米多孔梯度声学材料 船舶舱室噪声 统计能量分析法 噪声控制 

分 类 号：U661.44[交通运输工程—船舶及航道工程]