受静压力作用加筋板隔声性能研究  

Sound transmission through stiffened plates under static pressure

作　　者：孙勇敢 黎胜[1] 

机构地区：[1]大连理工大学工业装备结构分析国家重点实验室运载工程与力学学部船舶工程学院,辽宁大连116024 [2]重庆交通大学航海学院,重庆400074

出　　处：《振动与冲击》2016年第6期169-173,共5页Journal of Vibration and Shock

基　　金：辽宁省教育厅重点实验室基础研究项目(LZ2014004)

摘　　要：基于随机入射平面波建立混响声场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;此可为存在预应力的实际结构物隔声量计算提供参考。Based on the concept of plane wave propagation, a model of sound transmission through stiffened plates excited by an acoustic diffuse field under static pressure was developed. Simulation results based on the model structure are very close to experiment results in the literature. Sound transmission through stiffened plates under static pressure was then investigated. The results show that static pressure may cause the base frequency of the stiffened plate to shift and lead to transmission loss at low frequencies. When the pressure increases to a certain level, the sound longer increasing. The results might contribute to the literature of sound transmission computation initial stresses. transmission loss is no through structures with

关 键 词：加筋板 隔声量 混响声源 静压力 

分 类 号：U661.44[交通运输工程—船舶及航道工程]