低温环境对多孔材料声学性能的影响研究  

Effects of low temperature environment on acoustic performance of porous material

作　　者：万忠[1] 贾福鑫 马文庚 孙明 孙丽敏 WAN Zhong;JIA Fuxin;MA Wengeng;SUN Ming;SUN Limin(School of Naval Architecture,Ocean and Civil Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;College of Shipbuilding Engineering,Harbin Engineering University,Harbin 150001,China;Dalian Shipbuilding Industry Co.,Ltd.,Dalian 116021,China;Shanghai Institute of Space Power-Sources,Shanghai 200245,China)

机构地区：[1]上海交通大学船舶海洋与建筑工程学院,上海200240 [2]哈尔滨工程大学船舶工程学院,哈尔滨150001 [3]大连船舶重工集团有限公司,大连116021 [4]上海空间电源研究所,上海200245

出　　处：《振动与冲击》2023年第19期260-265,共6页Journal of Vibration and Shock

基　　金：山东省重点研发计划(2019JZZY010125)。

摘　　要：针对低温环境对船舶多孔舾装材料声学性能的影响,阻抗管吸/隔声性能测试研究是被开展。基于传递函数法进行不同环境影响下玻璃棉材料的声学性能测试,试验给出了温度和含水率对玻璃棉材料声学性能的影响规律;在此基础上,以内河破冰船为例分析了低温环境下玻璃棉材料声学性能变化对舱室噪声的影响。研究表明,低温环境下玻璃棉的高频吸声系数将随含水率增加而显著下降,插入损失随含水率增加而增加,但低温环境导致玻璃棉材料声学性能的变化不会提高舱室噪声的超标风险。Here,aiming at effects of low-temperature environment on acoustic performance of porous outfitting materials,testing studies on impedance tube absorption/sound insulation performance were conducted.Based on the transfer function method,acoustic performance of glass wool material under different environmental influences was tested,and effects of temperature and moisture content on acoustic performance of glass wool material were experimentally presented.Then,effects of changes in acoustic performance of glass wool material on cabin noise in low-temperature environment were analyzed taking an inland river icebreaker as an example.The study showed that high-frequency sound absorption coefficient of glass wool in low-temperature environment can significantly drop with increase in moisture content,and insertion loss can increase with increase in moisture content;changes in acoustic performance of glass wool material caused by low-temperature environment can’t increase the risk of cabin noise exceeding the standard.

关 键 词：低温环境 多孔材料 声学性能 阻抗管法 舱室噪声 

分 类 号：TH212[机械工程—机械制造及自动化] TH213.3