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Free vibration analysis of delaminated bimaterial beams

Record type: Article

Non-dimensional parameters, namely, axial stiffness ratio and bending stiffness ratio, are introduced to study the vibration of bimaterial beams with a single delamination. The use of these parameters provide a better understanding on the influence of the axial stiffness and bending stiffness of the delaminated layers on the vibration of a delaminated beam. Both the ‘free mode’ and ‘constrained mode’ models in the study of the vibration of delaminated beams are used in the present analysis. A relative slenderness ratio specific for delamination vibration is further introduced, which is shown to dominate the vibration characteristics of the beam. For lower slenderness ratios, the influence of the delamination decreases and a global vibration mode dominates. For higher slenderness ratios, the influence of the delamination increases and a local vibration mode prevails.

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Citation

Della, Christian N. and Shu, Dongwei (2007) Free vibration analysis of delaminated bimaterial beams Composite Structures, 80, (2), pp. 212-220. (doi:10.1016/j.compstruct.2006.05.005).

More information

Submitted date: September 2005
Published date: September 2007
Keywords: bimaterial beam, vibration, delamination, natural frequency, mode shape
Organisations: Fluid Structure Interactions Group

Identifiers

Local EPrints ID: 50330
URI: http://eprints.soton.ac.uk/id/eprint/50330
ISSN: 0263-8223
PURE UUID: 0b6f80ca-3616-4c33-974e-52fd6d296b84

Catalogue record

Date deposited: 18 Feb 2008
Last modified: 17 Jul 2017 14:53

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Contributors

Author: Christian N. Della
Author: Dongwei Shu

University divisions


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