✦ LIBER ✦

Vibration of beams with two overlapping delaminations in prebuckled states

✍ Scribed by Christian N. Della; Dongwei Shu

Publisher: Elsevier Science
Year: 2007
Tongue: English
Weight: 588 KB
Volume: 38
Category: Article
ISSN: 1359-8368
DOI: 10.1016/j.compositesb.2006.08.001

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✦ Synopsis

An analytical solution for the free vibrations of beams with two overlapping delaminations in prebuckled states is presented. The delaminated beam is analyzed as seven interconnected Euler-Bernoulli beams. The continuity and boundary conditions are satisfied between adjoining beams. Both the 'free mode' and the 'constrained mode' assumption in delamination buckling and vibration are used. A parametric study is performed to investigate the influence of the axial compressive load on the natural frequency and the mode shape of the delaminated beam. A monotonic relation between the natural frequency and the compressive load is observed. Comparisons with the analytical results reported for delamination buckling and vibration verify the validity of the present solution.

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