受静压力作用加筋板隔声性能研究

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振动与冲击 ›› 2016, Vol. 35 ›› Issue (6) : 169-173.

论文

受静压力作用加筋板隔声性能研究

孙勇敢1.2，黎胜1

作者信息 +

analysis of sound transmission through stiffened plates under static pressure

SUN Yong-gan1.2，LI Sheng1

Author information +

文章历史 +

摘要

基于随机平面波声源建立混响声源激励的加筋板隔声计算模型，通过对试验模型数值计算，二者结果基本吻合；计算存在静压力时加筋板隔声特性表明，存在静压力时加筋板基频移动会致低频隔声量显著增加，压力增加到一定程度时隔声量基本不再增加；此刻为存在预应力的实际结构物隔声量计算提供参考。

Abstract

Based on the concept of plane wave propagation, a diffuse acoustic field is developed for use along with a numerical model model,the model of sound transmission through stiffened plates excited by an acoustic diffuse field under static pressure is developed,And its effectiveness is strongly supported by close agreements between simulation results and experiment results of model in the literature . sound transmission through stiffened plates is also investigated, which consider the effect of static pressure. The results suggest that static pressure might results in a significant improvement in the transmission loss at low frequencies depending on the shift of resonant frequencies resulting from the pressure. When the pressure increases to a certain extent,the sound transmission loss is no longer increase.The analysis results might provide effective support for sound transmission through the actual structure with initial stresses.

导出引用

孙勇敢1.2，黎胜1. 受静压力作用加筋板隔声性能研究[J]. 振动与冲击, 2016, 35(6): 169-173

SUN Yong-gan1.2，LI Sheng1 . analysis of sound transmission through stiffened plates under static pressure[J]. Journal of Vibration and Shock, 2016, 35(6): 169-173

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