Title: Vibro-acoustic formulation of elastically restrained shear deformable stiffened rectangular plate
Authors: Kam, T. Y.
Jiang, C. H.
Lee, B. Y.
機械工程學系
Department of Mechanical Engineering
Keywords: Acoustics;Orthotropic plate;Vibration;Rayleigh-Ritz method;Sound radiation
Issue Date: 1-Nov-2012
Abstract: A method constructed on the basis of the Rayleigh-Ritz method and the first Rayleigh integral is presented for the vibro-acoustic analysis of elastically restrained shear deformable stiffened rectangular orthotropic plates. In the proposed method, the displacement fields of the plate and stiffeners are formulated on the basis of the first-order shear deformation theory. The theoretical sound pressure level (SPL) curve of the plate is constructed using the responses at different excitation frequencies and the first Rayleigh integral. The experimental SPL curve of an elastically restrained stiffened orthotropic plate was measured to verify the accuracy of the theoretical SPL curve of the plate. The effects of Young's modulus ratio E-1/E-2 on the sound radiation characteristics of elastically restrained stiffened orthotropic plate with different aspect ratios are studied using the proposed method. It has been shown that the effects of Young's modulus ratio become more prominent as the plate aspect ratio gets larger. (C) 2012 Elsevier Ltd. All rights reserved.
URI: http://dx.doi.org/10.1016/j.compstruct.2012.04.031
http://hdl.handle.net/11536/16804
ISSN: 0263-8223
DOI: 10.1016/j.compstruct.2012.04.031
Journal: COMPOSITE STRUCTURES
Volume: 94
Issue: 11
Begin Page: 3132
End Page: 3141
Appears in Collections:Articles


Files in This Item:

  1. 000306778000002.pdf