考虑横向剪切变形时通过层合复合材料圆柱壳的声音传输分析模型  

Analytical Model of Sound Transmission Through Laminated Composite Cylindrical Shells Considering Transverse Shear Deformation

作　　者：K·达内什柔 A·努里 R·泰尔毕图第 海治(译) 张禄坤(校) 

机构地区：[1]伊朗科技大学机械工程系,伊朗德黑兰

出　　处：《应用数学和力学》2008年第9期1057-1068,共12页Applied Mathematics and Mechanics

摘　　要：由于复合材料结构具有较高的强度-重量比,经常在航空航天工业中广泛使用.在空中声音传输意义上研究声音的传输损耗,通过一个无限层合复合材料圆柱壳体向航行器内部传输.壳体浸泡在外部流体介质中,内部也包含有流体,气流在外部流体介质中以常速流动.根据层合复合材料壳体的一阶剪切变形理论(FSDT),同时求得其精确解和声波方程.求得其传输损耗的数值解并与其它作者的结果进行了比较.在一定数值范围内,研究了结构特性和飞行状态,特别是Mach数、层合的次序及其偏斜角度,对传输损耗值的影响.此外,使用经典薄壳理论(CST)和一阶剪切变形理论(FSDT),比较了层合各向同性复合材料圆柱壳的传输损耗.Composite structures are often used in aerospace industries because of advantages offered by a high strength to weight ratio. Sound transmission through an infinite laminated composite cylindrical shell is studied in the context of the transmission of airborne sound into aircraft interior. The shell is immersed in external fluid medium and contains internal fluid, and airflow in external fluid medium is moving with a constant velocity. An exact solution was obtained by solving the first-order shear deformation theory（FSDT） of laminated composite shell and acoustic wave equations simultaneously. Transmission losses（TL） obtained from numerical solution were compared with those of other authors. The effects of structural properties and flight conditions on TL were studied for a range of values, especially, Mach number, stack sequences and angle of warp. Additionally, comparison of the transmission loss was made among classical thin shell theory（CST） and FSDT for laminated composite and isotropic cylindrical shells.

关 键 词：平面波 传输损失 层合复合材料壳 一阶 

分 类 号：O422[理学—声学] TB533[理学—物理]