Free vibration analysis of composite beams with two non-overlapping delaminations

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), 509-526. (doi:10.1016/j.ijmecsci.2004.05.008).


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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.

Item Type: Article
Digital Object Identifier (DOI): doi:10.1016/j.ijmecsci.2004.05.008
ISSNs: 0020-7403 (print)
Related URLs:
Keywords: delamination, free vibration, composite beams, natural frequency, mode shape, laminates
Subjects: T Technology > TJ Mechanical engineering and machinery
T Technology > TA Engineering (General). Civil engineering (General)
Divisions : University Structure - Pre August 2011 > School of Engineering Sciences > Fluid-Structure Interactions
ePrint ID: 50351
Accepted Date and Publication Date:
April 2004Published
March 2003Submitted
Date Deposited: 19 Feb 2008
Last Modified: 31 Mar 2016 12:27

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