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Vibrations of beams with two overlapping delaminations. (In: Twelfth International Conference on Composite Structures)

Vibrations of beams with two overlapping delaminations. (In: Twelfth International Conference on Composite Structures)
Vibrations of beams with two overlapping delaminations. (In: Twelfth International Conference on Composite Structures)
Delamination in composite laminates may arise from either imperfect fabrication processes or impact during service. The locations of the delaminations are arbitrary. In this research, an analytical solution to the free vibrations of a beam with two overlapping delaminations is presented. The delaminated beam is analyzed as seven interconnected Euler–Bernoulli beams. The influence of the sizes and the locations of the delaminations on the fundamental frequency and the mode shape of the beam are investigated. Complex vibration behaviors emerge for different sizes and locations of the delaminations. The results based on the present model agree well with the analytical data reported in the literature.
free vibrations, delaminations, natural frequency, mode shape, beam, laminates
0263-8223
101-108
Della, Christian N.
218552a1-70df-411c-9197-a24a243b1002
Shu, Dongwei
c54c2744-7263-43e5-8eda-7d329d44c4d8
MSRao, Parlapalli
0edfeb0f-6607-4d11-8ebd-0a6e6ec5f881
Della, Christian N.
218552a1-70df-411c-9197-a24a243b1002
Shu, Dongwei
c54c2744-7263-43e5-8eda-7d329d44c4d8
MSRao, Parlapalli
0edfeb0f-6607-4d11-8ebd-0a6e6ec5f881

Della, Christian N., Shu, Dongwei and MSRao, Parlapalli (2004) Vibrations of beams with two overlapping delaminations. (In: Twelfth International Conference on Composite Structures). Composite Structures, 66 (1-4), 101-108. (doi:10.1016/j.compstruct.2004.04.027).

Record type: Article

Abstract

Delamination in composite laminates may arise from either imperfect fabrication processes or impact during service. The locations of the delaminations are arbitrary. In this research, an analytical solution to the free vibrations of a beam with two overlapping delaminations is presented. The delaminated beam is analyzed as seven interconnected Euler–Bernoulli beams. The influence of the sizes and the locations of the delaminations on the fundamental frequency and the mode shape of the beam are investigated. Complex vibration behaviors emerge for different sizes and locations of the delaminations. The results based on the present model agree well with the analytical data reported in the literature.

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More information

Published date: October 2004
Keywords: free vibrations, delaminations, natural frequency, mode shape, beam, laminates
Organisations: Fluid Structure Interactions Group

Identifiers

Local EPrints ID: 50534
URI: http://eprints.soton.ac.uk/id/eprint/50534
ISSN: 0263-8223
PURE UUID: 3e97c6ee-ffdc-4f0e-a78e-f4278dbbf4d1

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Date deposited: 26 Feb 2008
Last modified: 15 Mar 2024 10:06

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Contributors

Author: Christian N. Della
Author: Dongwei Shu
Author: Parlapalli MSRao

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