Applied Mathematics and Mechanics (English Edition) ›› 2011, Vol. 32 ›› Issue (6): 701-718.doi: https://doi.org/10.1007/s10483-011-1450-9

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

K. DANESHJOU1, H. RAMEZANI1, R. TALEBITOOTI2   

  1. 1. Department of Mechanical Engineering, Iran University of Science and Technology,Tehran 16844, Iran;
    2. Department of Automotive Engineering, Iran University of Science and Technology,Tehran 16844, Iran
  • 收稿日期:2010-06-01 修回日期:2011-02-14 出版日期:2011-06-01 发布日期:2011-06-01

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

K. DANESHJOU1, H. RAMEZANI1, R. TALEBITOOTI2   

  1. 1. Department of Mechanical Engineering, Iran University of Science and Technology,Tehran 16844, Iran;
    2. Department of Automotive Engineering, Iran University of Science and Technology,Tehran 16844, Iran
  • Received:2010-06-01 Revised:2011-02-14 Online:2011-06-01 Published:2011-06-01

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.

关键词: cylindrical laminated composite shell, transmission loss, porous media

Abstract:

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.

Key words: cylindrical laminated composite shell, porous media, transmission loss

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