多孔橡胶材料声传递损失性能分析:模型描述  

Sound Transmission Loss Analysis of Porous Rubber Material: Descriptions of Model

作　　者：应申舜[1] 卢奂采[1] 姜伟[1] 

机构地区：[1]浙江工业大学特种装备制造与先进加工技术教育部重点实验室,浙江杭州310014

出　　处：《轻工机械》2013年第6期1-4,共4页Light Industry Machinery

基　　金：浙江省自然科学基金资助项目(Y1110953);浙江工业大学特种装备制造与先进加工技术教育部重点实验室开放基金(2011EM008)

摘　　要：研究带有无孔薄覆盖层的多孔橡胶板构件的声传递损失特性,考察了从低频、中频到高频范围内,不同结构参数和材料特性对多孔橡胶材料隔声性能的影响。这一部分建立了多孔橡胶板构件的有限元(FE)与统计能量(SEA)混合分析模型。在仿真模型中,多孔橡胶板边界条件为固支连接,在多孔橡胶板模型的一侧有散射声场作为激励,在另外一侧有半无限声场,用以计算和预测其声传递损失。数值结果与文献进行比较,结果显示该模型具有较好的可靠性。The purpose of this paper is to examine TL performance within low to high frequency range, while structural parameters and material properties of a porous rubber plate with thin solid rubber coating varied respectively. In this part of the paper, the numerical model of the porous rubber plate was constructed by FE-SEA method with pinned boundary condition along all edges, and excited by a diffused acoustic field. The validity of the model was verified by comparing the results with those available in the literature. The results show that the present model is in good agreement with the available data.

关 键 词：多孔橡胶板 声传递损失 有限元与统计能量混合方法 有限元法 统计能量分析法 

分 类 号：TB535.1[理学—物理]