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

Kamran Daneshjou; Ali Nouri; Roohollah Talebitooti

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Kamran Daneshjou, Ali Nouri, Roohollah Talebitooti. Analytical Model of Sound Transmission Through Laminated Composite Cylindrical Shells Considering Transverse Shear Deformation[J]. Applied Mathematics and Mechanics, 2008, 29(9): 1057-1068.

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

Department of Mechanical Engineering, Iran University of Science and Technology, Tehran, Iran

Received Date: 2007-03-07
Rev Recd Date: 2008-06-22
Publish Date: 2008-09-15

Abstract

Abstract

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.
- plane wave,
- transmission loss,
- laminated composite shell,
- first-order

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References(17)

References

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