隔声罩阻尼和隔声层对其降噪效果影响分析  

Analysis of Influence of Thickness and Damping of Sound Insulation Cover on its Noise Reducing Effect

作　　者：付常佳[1] 陈长征[1] 

机构地区：[1]沈阳工业大学振动噪声研究所,沈阳110870

出　　处：《噪声与振动控制》2010年第5期113-115,124,共4页Noise and Vibration Control

摘　　要：以隔声罩为研究对象,采用SYSNOISE软件建立有限元模型并分析厚度,阻尼层对隔声罩降噪效果的影响。得出厚度和阻尼层的变化会对隔声罩降噪效果产生直接影响的结论,为解决实际问题提供一定的参考依据。The finite element model for a sound insulation cover is established and analyzed by means of the SYSNOISE software.The influence of the cover thickness and the damping layer on the noise reduction effect of the sound insulation cover is analyzed.It is concluded that the cover thickness and damping layer have immediate affect on the noise reducing effect of the cover,which provides some reference data for the design of sound insulation covers.

关 键 词：声学 阻尼 隔声罩 厚度 有限元 降噪 

分 类 号：TB53[理学—物理]