This paper proposes a global optimization method to ensure maximum stiffness and minimum material cost without deforming the thin organic light-emitting diode (OLED) TV module when electrogalvanized and galvanized steel sheets are used. A meta-model and a nondominated sorting genetic algorithm II (NSGA-II) approach are used as a strategy for global optimization. To reduce the errors of the meta-models, the main design variables that affect the stiffness, material cost, and constrained stress are quantitatively analyzed using an orthogonal design of experiment, and the best meta-model is selected using the root mean-square error index that covers the interpolation and regression models. Through the NSGA-II approach, the relationship of the optimal design between the stress and material cost of the OLED TV module can be plotted as a Pareto-optimal front and is used to select the optimal design according to the design intention of the engineer. In this study, the authors expect that the procedure for determining the optimal design using the meta-model and NSGA-II provide an intuitive and efficient optimization method for multi-purpose optimization problems of thin OLED TV modules.

本文提出了一种全局优化方法，以在使用电镀锌和镀锌钢板时确保最大刚度和最小材料成本，而不会使薄的有机发光二极管 (OLED) 电视模块变形。元模型和非支配排序遗传算法 II (NSGA-II) 方法被用作全局优化的策略。为减少元模型的误差，采用正交试验设计对影响刚度、材料成本和约束应力的主要设计变量进行定量分析，并利用均方根误差选择最佳元模型涵盖插值和回归模型的索引。通过 NSGA-II 方法，OLED电视模组的最佳设计应力与材料成本之间的关系可以绘制为帕累托最优前沿，用于根据工程师的设计意图选择最佳设计。在这项研究中，作者期望使用元模型和 NSGA-II 确定最佳设计的程序为薄型 OLED 电视模块的多用途优化问题提供一种直观有效的优化方法。