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Vibroacoustic analysis of a clamped finite orthotropic laminated double-composite plate with an air cavity

Tran Ich Thinh, Pham Ngoc Thanh

Abstract


The vibroacoustic analysis of a clamped finite orthotropic laminated double-composite plate with a closed air cavity is investigated analytically presented within classical laminated plate theory for laminated composite plate. Using the method of modal decomposition, a double Fourier series solution is obtained to characterize the vibroacoustic performance of the structure. The sound transmission loss (STL) is calculated from the ratio of incident to transmitted acoustic powers. The accuracy of the solution is shown with comparing the STL values obtained from this presented model with the experimental and theoretical results available in literature. The soundproof ability of finite double-composite plate with a clamed boundary is shown. The effects of thickness of faceplates, thickness of air cavity and the angles of the incident sound are systematically examined.


Keywords


vibroacoustic analysis; double-composite plate; sound transmission loss

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References


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DOI: https://doi.org/10.15625/0866-7136/13723 Display counter: Abstract : 76 views. PDF : 36 views.

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