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Vibrations of multiple delaminated beams

Shu, Dongwei and Della, Christian N. (2004) Vibrations of multiple delaminated beams Composite Structures, 64, (3-4), pp. 467-477. (doi:10.1016/j.compstruct.2003.09.047).

Record type: Article


The free vibrations of beams with two enveloping delaminations have been solved analytically without resorting to numerical approximation. The multiple delaminated beam is analyzed as several interconnected Euler–Bernoulli beams. The differential stretching and the bending–extension coupling are considered in the formulation. The influence of the sizes and locations of the delaminations on the primary and secondary frequencies and mode shapes of a beam are investigated. For clamped–clamped beams, the primary frequency shows a high sensitivity for the long delamination but a low sensitivity for the second short delamination, while for the secondary frequency, the sensitivity is high for both delaminations. For cantilever beams, the primary and secondary frequencies show a high sensitivity for the long delamination but low sensitivity for the second short delamination. Results are compared with the analytical and experimental data reported in the literature to verify the validity of the present model.

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Submitted date: June 2003
Published date: June 2004
Keywords: free vibrations, multiple delaminations, frequency, mode shape, composite beam
Organisations: Fluid Structure Interactions Group


Local EPrints ID: 50350
ISSN: 0263-8223
PURE UUID: f242d892-fc51-4099-8ad4-33a6ea09051c

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Date deposited: 19 Feb 2008
Last modified: 17 Jul 2017 14:53

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Author: Dongwei Shu
Author: Christian N. Della

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