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Vibration of composite beams with two overlapping delaminations

Della, Christian N., Shu, Dongwei and Zhao, Yapu (2005) Vibration of composite beams with two overlapping delaminations Acta Mechanica Sinica, 21, (1), pp. 47-55. (doi:10.1007/s10409-004-0006-6).

Record type: Article


Delaminations in composite laminates may develop from small cracks due to fabrication and impact loading, or from places of high stress concentration. The locations of the delaminations are not determinate. In this research, an analytical solution for the free vibration of a composite beam with two overlapping delaminations is presented. The delaminated beam is analyzed as seven interconnected beams using the delaminations as their boundaries. The continuity and equilibrium conditions are satisfied between the adjoining regions of the beams. Classical beam theory is applied to each of the beams. Complex vibration behaviors emerge for different sizes and locations of the delaminations. Comparison with analytical results reported in the literature verifies the validity of the present solution.

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Published date: February 2005
Keywords: vibration, delaminations, composite beams, natural frequency, mode shape
Organisations: Fluid Structure Interactions Group


Local EPrints ID: 50344
ISSN: 0567-7718
PURE UUID: fe2e241a-124b-4b8c-8261-07ace54b6402

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Date deposited: 20 Feb 2008
Last modified: 17 Jul 2017 14:53

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Author: Christian N. Della
Author: Dongwei Shu
Author: Yapu Zhao

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