噪声与振动控制Issue(4)：96-100,5.DOI:10.3969/j.issn.1006-1335.2014.04.021
单向加筋双层板隔声性能的有限元分析
Finite Element Analysis of Sound Transmission through Unidirectionally Reinforced Sandwich Plates
摘要
Abstract
The sound transmission loss (STL) of unidirectionally reinforced sandwich plates with typical corrugated cores is analyzed by means of finite element method. Two different FE models, of which one is with acoustically-transparent core elements and the other considers the structural-acoustic coupling between the core elements and the fluid inside the enclosed cavities, are respectively created by ABAQUS. The STL curves for the plates with different core structures and acoustic media in the cavities are calculated. The results indicate that the error of STL computation of the reinforced sandwich plate induced by the“acoustically transparent”assumption for the reinforced panels depends on the ratio of the structural resistance of the core elements to the acoustic resistance of the fluid inside the enclosed cavities. Therefore, more accurate prediction of the vibro-acoustic responses and STL of the plates can be achieved by considering the structural-acoustic couplings between the core elements and the fluid in the cavities in the modeling.关键词
振动与波/加筋双层板/声透射损失/结构-声学耦合/有限元分析Key words
vibration and wave/sandwich plates/sound transmission loss/structural-acoustic coupling/finite element analysis分类
通用工业技术引用本文复制引用
王义柏,魏智平,郑辉..单向加筋双层板隔声性能的有限元分析[J].噪声与振动控制,2014,(4):96-100,5.基金项目
国家自然科学基金 （）
