摘要
首先建立均匀圆柱腔中弹性波的计算模型,然后利用该模型建立复合过渡型声腔结构消声瓦吸声性能计算的理论模型,并应用这一理论模型计算分析现有声腔结构消声瓦及几种变形的声腔结构声腔结构形式的消声瓦的吸声性能,讨论材料环境温度和材料参数变化对吸声性能的影响,最后总结消声瓦声腔结构和不同材料参数对吸声性能影响的基本规律。
At first,the computation model of the elastic wave which spreading in the uniformity medium with cylindrical acoustical cavities was theorized in this paper.Secondly the acoustical absorption computation model of anechoic tile with composite transition acoustical cavities was deduced.By the application of the above acoustical absorption computation model,the acoustical characteristic of anechoic tiles with different acoustical cavities and materials parameter were calculated,and the changes of environment temperature and material parameter which effect on acoustical absorption were discussed.The common law of anechoic tiles were summarized.
出处
《噪声与振动控制》
CSCD
北大核心
2007年第4期123-126,共4页
Noise and Vibration Control
关键词
声学
计算方法
消声瓦
声腔结构
材料
acoustics
computation method
anechoic tile
acoustical cavity
material
