Multi-objective optimization of composite sandwich panels using lamination parameters and spectral Chebyshev method

Seyyedrahmani, Farzad and Khandar Shahabad, Peiman and Serhat, Gökhan and Bediz, Bekir and Başdoğan, İpek (2022) Multi-objective optimization of composite sandwich panels using lamination parameters and spectral Chebyshev method. Composite Structures, 289 . ISSN 0263-8223 (Print) 1879-1085 (Online)

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Abstract

Composite materials are widely used in various industries because of their distinct properties. Hybridization is an efficient way of designing composite panels to decrease the cost and/or weight while maintaining stiffness properties. In this study, an accurate and efficient framework is developed to optimize laminated sandwich panels composed of high-stiffness face sheets and low-stiffness core. The stiffness properties of face sheets and core are represented using lamination parameters. The governing equations are derived following first-order shear deformation theory and solved using the spectral Chebyshev approach. In multi-objective optimization problems, genetic algorithm is used to determine Pareto-optimal solutions for fundamental frequency, frequency gap, buckling load, and cost metrics. In these analyses, optimal lamination parameters and thickness are found for face-sheets and core of sandwich panels, and the results are presented as 2D and 3D Pareto-optimal design points. When the individual performance metrics lead to different optimum points, a scattering behavior is observed in the 3D Pareto sets whose boundaries are defined by the 2-objective Pareto fronts. The results provide insights into the design requirements for improving the dynamic and load-carrying behavior of sandwich laminates while minimizing the cost that presents the usability of the presented approach in the multi-objective optimization.
Item Type: Article
Uncontrolled Keywords: Laminated composites; Sandwich panels; Multi-objective optimization; Structural optimization; Meshless methods; Spectral Chebyshev
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA401-492 Materials of engineering and construction. Mechanics of materials
T Technology > TJ Mechanical engineering and machinery > TJ170-179 Mechanics applied to machinery. Dynamics
Divisions: Faculty of Engineering and Natural Sciences > Academic programs > Mechatronics
Faculty of Engineering and Natural Sciences
Depositing User: Bekir Bediz
Date Deposited: 23 Mar 2022 10:51
Last Modified: 23 Mar 2022 10:51
URI: https://research.sabanciuniv.edu/id/eprint/42791

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