The aim of this numerical and statistical study was to investigate the buckling analysis of laminated composite plates containing functionally graded fiber orientation angles. The laminated composite plates had functionally graded fiber orientation angles based on Taguchi’s L18 (21 × 32) orthogonal array. The fiber orientation angles were considered to be control factors. Numerical analyses were performed using finite element software ANSYS. The optimum critical buckling load and the effects of fiber orientation angles for maximum data were determined using the analysis of the signal-to-noise ratio. The importance levels of laminates and their percent contribution on the buckling characteristics were calculated using analysis of variance. Regression analysis was employed to investigate the effects of control factors on buckling responses mathematically. The effects of laminate stacking sequence, mesh size, element type, mode number, and boundary condition were carried out using laminates with the optimum levels.

中文翻译：

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具有功能梯度纤维取向角的层压复合板的数值和统计屈曲分析

这项数值和统计研究的目的是研究包含功能梯度纤维取向角的层压复合板的屈曲分析。基于田口的 L18 (21 × 32) 正交阵列，层压复合板具有功能分级的纤维取向角。纤维取向角被认为是控制因素。使用有限元软件ANSYS进行数值分析。使用信噪比分析确定最佳临界屈曲载荷和纤维取向角对最大数据的影响。使用方差分析计算层压板的重要性水平及其对屈曲特性的贡献百分比。回归分析用于从数学上研究控制因素对屈曲响应的影响。层压板堆叠顺序、网格尺寸、单元类型、模式数和边界条件的影响使用具有最佳水平的层压板进行。