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http://dx.doi.org/10.12989/sem.2016.59.6.1055

Free vibration and buckling analysis of the impacted hybrid composite beams  

Ergun, Emin (Mechanical Engineering Department, Pamukkale University)
Yilmaz, Yasin (Mechanical Engineering Department, Pamukkale University)
Callioglu, Hasan (Automotive Engineering Department, Pamukkale University)
Publication Information
Structural Engineering and Mechanics / v.59, no.6, 2016 , pp. 1055-1070 More about this Journal
Abstract
The aim of this experimental study is to investigate the free vibration and buckling behaviors of hybrid composite beams having different span lengths and orientation angles subjected to different impact energy levels. The impact energies are applied in range from 10 J to 30 J. Free vibration and buckling behaviors of intact and impacted hybrid composite beams are compared with each other for different span lengths, orientation angles and impact levels. In free vibration analysis, the first three modes of hybrid beams are considered and natural frequencies are normalized. It is seen that first and second modes are mostly affected with increasing impact energy level. Also, the fundamental natural frequency is mostly affected with the usage of mold that have 40 mm span length (SP40). Moreover, as the impact energy increases, the normalized critical buckling loads decrease gradually for $0^{\circ}$ and $30^{\circ}$ oriented hybrid beams but they fluctuate for the other beams.
Keywords
hybrid composites; vibration; buckling; impact behaviour; damage mechanism;
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