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Structural Engineering and Mechanics Volume 67, Number 6, September25 2018 , pages 617-628 DOI: https://doi.org/10.12989/sem.2018.67.6.617 |
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Buckling load optimization of laminated plates resting on Pasternak foundation using TLBO |
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Umut Topal, Trung Vo-Duy, Tayfun Dede and Ebrahim Nazarimofrad
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| Abstract | ||
| This paper deals with the maximization of the critical buckling load of simply supported antisymmetric angle-ply plates resting on Pasternak foundation subjected to compressive loads using teaching learning based optimization method (TLBO). The first order shear deformation theory is used to obtain governing equations of the laminated plate. In the present optimization problem, the objective function is to maximize the buckling load factor and the design variables are the fibre orientation angles in the layers. Computer programming is developed in the MATLAB environment to estimate optimum stacking sequences of laminated plates. A comparison also has been performed between the TLBO, genetic algorithm (GA) and differential evolution algorithm (DE). Some examples are solved to show the applicability and usefulness of the TLBO for maximizing the buckling load of the plate via finding optimum stacking sequences of the plate. Additionally, the influences of different number of layers, plate aspect ratios, foundation parameters and load ratios on the optimal solutions are investigated. | ||
| Key Words | ||
| laminated composite plates; Pasternak foundation; optimization; TLBO; buckling | ||
| Address | ||
| Umut Topal: Department of Civil Engineering, Faculty of Technology, Karadeniz Technical University, Trabzon, Turkey Trung Vo-Duy: 1) Division of Computational Mathematics and Engineering, Institute for Computational Science, Ton Duc Thang University, Ho Chi Minh City, Vietnam 2) Faculty of Civil Engineering Ton Duc Thang University, Ho Chi Minh City, Vietnam Tayfun Dede: Department of Civil Engineering, Karadeniz Technical University, Trabzon, Turkey Ebrahim Nazarimofrad: Department of Civil Engineering, Bu Ali Sina University, Hamedan, Iran | ||