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Optimization of laminated composite plates for maximum biaxial buckling load

This paper proposes an optimization procedure for maximization of the biaxial buckling load of laminated composite plates using the gradient-based interior-point optimization algorithm. The fiber orientation angle and the thickness of each lamina are considered as continuous design variables of the problem. | VNU Journal of Science Mathematics Physics Vol. 36 No. 2 2020 1-12 Original Article Optimization of Laminated Composite Plates for Maximum Biaxial Buckling Load Pham Dinh Nguyen1 Quang-Viet Vu2 George Papazafeiropoulos3 Hoang Thị Thiem1 Pham Minh Vuong1 Nguyen Dinh Duc1 1 Advanced Materials and Structures Laboratory VNU University of Engineering and Technology Vietnam National University Hanoi 144 Xuan Thuy Cau Giay Hanoi Vietnam 2 Faculty of Civil Engineering Vietnam Maritime University 484 Lach Tray Hai Phong Vietnam 3 Department of Structural Engineering National Technical University of Athens Zografou Athens 15780 Greece Received 11 April 2020 Accepted 05 May 2020 Abstract This paper proposes an optimization procedure for maximization of the biaxial buckling load of laminated composite plates using the gradient-based interior-point optimization algorithm. The fiber orientation angle and the thickness of each lamina are considered as continuous design variables of the problem. The effect of the number of layers fiber orientation angles thickness and length to thickness ratios on the buckling load of the laminated composite plates under biaxial compression is investigated. The effectiveness of the optimization procedure in this study is compared with previous works. Keywords Optimum design Fiber angles Biaxial compression Laminated composite plates Abaqus2Matlab. 1. Introduction Composite materials are widely applied in many heavy duty engineering structures. Composite materials are lightweight and they have low density high strength and high stiffness. Those properties are a results of the characteristics of the main constituents of composite materials. Therefore the optimal design of the latter depends on the design of their various components. Optimization problems involving ____ Corresponding author. Email address ducnd@vnu.edu.vn https doi.org 10.25073 2588-1124 vnumap.4509 1 2 P.D. Nguyen et al. VNU Journal of Science Mathematics Physics Vol. 36 No. 2