Wave transmission through laminated composite double-walled cylindrical shell lined with porous materials  

作　　者：K.DANESHJOU H.RAMEZANI R.TALEBITOOTI 

机构地区：[1]Department of Mechanical Engineering,Iran University of Science and Technology [2]Department of Automotive Engineering,Iran University of Science and Technology

出　　处：《Applied Mathematics and Mechanics(English Edition)》2011年第6期701-718,共18页应用数学和力学（英文版）

摘　　要：A study on free harmonic wave propagation in a double-walled cylindrical shell, whose walls sandwich a layer of porous materials, is presented within the framework of the classic theory for laminated composite shells. One of the most effective components of the wave propagation through the porous core is estimated with the aid of a flat panel with the same geometrical properties. By considering the effective wave component, the porous layer is modeled as a fluid with equivalent properties. Thus, the model is simplified as a double-walled cylindrical shell trapping the fluid media. Finally, the transmission loss （TL） of the structure is estimated in a broadband frequency, and then the results are compared.A study on free harmonic wave propagation in a double-walled cylindrical shell, whose walls sandwich a layer of porous materials, is presented within the framework of the classic theory for laminated composite shells. One of the most effective components of the wave propagation through the porous core is estimated with the aid of a flat panel with the same geometrical properties. By considering the effective wave component, the porous layer is modeled as a fluid with equivalent properties. Thus, the model is simplified as a double-walled cylindrical shell trapping the fluid media. Finally, the transmission loss （TL） of the structure is estimated in a broadband frequency, and then the results are compared.

关 键 词：transmission loss porous media cylindrical laminated composite shell 

分 类 号：O347.41[理学—固体力学]