静水压变化下橡胶结构吸声性能的计算与分析  

Computation and Analysis of Sound Absorption Performance of Rubber Structures under Variable Hydraulic Pressure

作　　者：姜闻文[1] 陈光冶[1] 朱彦[1] 

机构地区：[1]上海交通大学船舶海洋与建筑工程学院,上海200030

出　　处：《噪声与振动控制》2006年第5期55-57,73,共4页Noise and Vibration Control

摘　　要：应用有限元方法计算静水压力变化下几种橡胶吸声结构的形变和吸声性能。结果表明,静压变化对复合渐变过渡型空腔的橡胶结构的形状和吸声性能影响最小。在静水压4.5MPa以内,随静压增高,几种典型腔体结构的吸声频带都朝向高频端移动,与实际测试结果变化趋势一致。We applied the finite element method to study the variation of sound absorption structure and performance of rubber material under variable hydraulic pressure, The results show that the variation of static hydraulic pressure does not significantly affect the deformation and sound absorption performance of the structure with compound cavum. Within the static pressure of 4.5MPa, the sound absorption bands of the three typical structures move to the higher frequency with the static pressure increase. The computing results agree with the experiments,

关 键 词：声学 静水压 变形 吸声性能 有限元 

分 类 号：TB564[交通运输工程—水声工程]