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Research Article

Optimum design of anti-buckling behavior of graphite/epoxy laminated composites by differential evolution and simulated annealing method

Mehmet Akçair 1, Melih Savran 1, Levent Aydın2, Ozan Ayakdaş3, Savaş Öztürk4,    Nilay Küçükdoğan1

1Department of Graduate School of Natural and Applied Sciences, Izmir Katip Çelebi University, Izmir, Turkey 2Department of Mechanical Engineering, Izmir Katip Çelebi University, Izmir, Turkey                             3Department of Graduate School of Engineering and Sciences, Izmir Institue of Technology, Izmir, Turkey 4Department of Metallurgical and Materials Engineering, Manisa Celal Bayar University, Manisa, Turkey

Keywords

Abstract

Laminated composite; 

Stochastic optimization;

Buckling

Stacking sequence design and optimization of 64 layered symmetric-balance graphite/epoxy laminated composite have been performed. The optimization problems aim to find the optimum stacking sequence maximizing the critical buckling load by single objective optimization approach. Differential Evolution (DE) and Simulated Annealing (SA) optimization algorithms are proposed to solve the problems. The effect of the aspect ratios (a/b) and in-plane biaxial compressive loading ratios (Nx/Ny) on critical buckling load are investigated. In order to see the effect of discrete increments of fiber orientation angle on critical buckling load, 1°, 5°, 15°, 30° and 45° fiber angle increments are also considered. The results show that (i) the proposed algorithms DE and SA exhibit comparable performance in terms of critical buckling load when compared Genetic algorithm (GA) and Generalized pattern search algorithm (GPSA), (ii) DE and SA find distinct stacking sequence configurations in terms of buckling load for the same laminated structure design problems.

 © 2019 MIM Research Group. All rights reserved.

DOI: http://dx.doi.org/10.17515/resm2019.66is0909                          Full Text

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Last Update:

18.03.2019

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