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

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 co...

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Bibliographic Details
Published in:Applied mathematics and mechanics 2011-06, Vol.32 (6), p.701-718
Main Authors: Daneshjou, K., Ramezani, H., Talebitooti, R.
Format: Article
Language:English
Subjects:
Applications of Mathematics
Classical Mechanics
Computational fluid dynamics
Cylindrical shells
Fluid flow
Fluid- and Aerodynamics
Fluids
Laminates
Mathematical Modeling and Industrial Mathematics
Mathematical models
Mathematics
Mathematics and Statistics
Partial Differential Equations
Porous materials
Wave propagation
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Summary: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.
ISSN:0253-4827
1573-2754
DOI:10.1007/s10483-011-1450-9