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Article

Metaheuristic Optimization of Laminated Composite Plates with Cut-Outs

1
Department of Civil Engineering, Turkish-German University, İstanbul 34820, Turkey
2
Department of Civil, Geological and Mining Engineering, Polytechnique Montréal, Montreal, QC H3T 1J4, Canada
3
Department of Civil Engineering, İstanbul University-Cerrahpaşa, İstanbul 34320, Turkey
4
Department of Civil and Environmental Engineering, Temple University, Philadelphia, PA 19122, USA
5
College of IT Convergence, Gachon University, Seongnam 13120, Korea
*
Authors to whom correspondence should be addressed.
Academic Editor: Chao Zhang
Coatings 2021, 11(10), 1235; https://doi.org/10.3390/coatings11101235
Received: 8 September 2021 / Revised: 3 October 2021 / Accepted: 8 October 2021 / Published: 12 October 2021
(This article belongs to the Special Issue Damage and Fracture of Composites)
The stacking sequence optimization of laminated composite plates while maximizing the structural performance or minimizing the weight is a subject investigated extensively in the literature. Meanwhile, research on the optimization of laminates with cut-outs has been relatively limited. Cut-outs being an indispensable feature of structural components, this paper concentrates on the stacking sequence optimization of composite laminates in the presence of circular cut-outs. The buckling load of a laminate is used as a metric to quantify the structural performance. Here the laminates are modeled as carbon fiber-reinforced composites using the finite element analysis software, ABAQUS. For the optimization, the widely used harmony search algorithm is applied. In terms of design variables, ply thickness, and fiber orientation angles of the plies are used as continuously changing variables. In addition to the stacking sequence, another geometric variable to consider is the aspect ratio (ratio of the length of the longer sides to the length of the shorter sides of the plate) of the rectangular laminates. The optimization is carried out for three different aspect ratios. It is shown that, by using dispersed stacking sequences instead of the commonly used 0°/±45°/±90° fiber angle stacks, significantly higher buckling loads can be achieved. Furthermore, changing the cut-out geometry is found to have a significant effect on the structural performance. View Full-Text
Keywords: meta-heuristic optimization; harmony search; laminated composite plates; buckling; carbon fiber reinforced polymer; dispersed stacking sequences meta-heuristic optimization; harmony search; laminated composite plates; buckling; carbon fiber reinforced polymer; dispersed stacking sequences
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MDPI and ACS Style

Cakiroglu, C.; Islam, K.; Bekdaş, G.; Kim, S.; Geem, Z.W. Metaheuristic Optimization of Laminated Composite Plates with Cut-Outs. Coatings 2021, 11, 1235. https://doi.org/10.3390/coatings11101235

AMA Style

Cakiroglu C, Islam K, Bekdaş G, Kim S, Geem ZW. Metaheuristic Optimization of Laminated Composite Plates with Cut-Outs. Coatings. 2021; 11(10):1235. https://doi.org/10.3390/coatings11101235

Chicago/Turabian Style

Cakiroglu, Celal, Kamrul Islam, Gebrail Bekdaş, Sanghun Kim, and Zong Woo Geem. 2021. "Metaheuristic Optimization of Laminated Composite Plates with Cut-Outs" Coatings 11, no. 10: 1235. https://doi.org/10.3390/coatings11101235

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