Free vibration analysis of composite beams with two non-overlapping delaminations
Free vibration analysis of composite beams with two non-overlapping delaminations
An analytical solution to the free vibration of composite beams with two non-overlapping delaminations is presented. The delaminated beam is modeled as seven interconnected Euler–Bernoulli beams using the delaminations as their boundaries. The continuity and the equilibrium conditions are satisfied between adjoining beams. The analysis includes the differential stretching between the delaminated layers and the bending–extension coupling. The results of the present model agree well with the analytical and experimental data reported in the literature. Parametric studies show that the sizes and locations of the delaminations have significant effect on the natural frequencies and mode shapes. These results provide useful information in the study of the free vibration of delaminated composite beams.
delamination, free vibration, composite beams, natural frequency, mode shape, laminates
509-526
Shu, Dongwei
c54c2744-7263-43e5-8eda-7d329d44c4d8
Della, Christian N.
218552a1-70df-411c-9197-a24a243b1002
April 2004
Shu, Dongwei
c54c2744-7263-43e5-8eda-7d329d44c4d8
Della, Christian N.
218552a1-70df-411c-9197-a24a243b1002
Shu, Dongwei and Della, Christian N.
(2004)
Free vibration analysis of composite beams with two non-overlapping delaminations.
International Journal of Mechanical Sciences, 46 (4), .
(doi:10.1016/j.ijmecsci.2004.05.008).
Abstract
An analytical solution to the free vibration of composite beams with two non-overlapping delaminations is presented. The delaminated beam is modeled as seven interconnected Euler–Bernoulli beams using the delaminations as their boundaries. The continuity and the equilibrium conditions are satisfied between adjoining beams. The analysis includes the differential stretching between the delaminated layers and the bending–extension coupling. The results of the present model agree well with the analytical and experimental data reported in the literature. Parametric studies show that the sizes and locations of the delaminations have significant effect on the natural frequencies and mode shapes. These results provide useful information in the study of the free vibration of delaminated composite beams.
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Submitted date: March 2003
Published date: April 2004
Keywords:
delamination, free vibration, composite beams, natural frequency, mode shape, laminates
Organisations:
Fluid Structure Interactions Group
Identifiers
Local EPrints ID: 50351
URI: http://eprints.soton.ac.uk/id/eprint/50351
ISSN: 0020-7403
PURE UUID: 0f96f57f-06b5-4cdd-bcf2-c19b58d0f693
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Date deposited: 19 Feb 2008
Last modified: 15 Mar 2024 10:05
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Author:
Dongwei Shu
Author:
Christian N. Della
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