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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.
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