The variation of modal responses due to the change in shapes (square/rectangular) and sizes of the cutout impregnated composite panels (Glass/Epoxy) are predicted numerically using higher-order finite element formulation. The degree of accuracy of the proposed model is verified by comparing the modal values with the experimentally recorded data for the validation purpose, including the experimental composite properties. The isoparametric finite element formulation is adopted to model the layered panel configuration in association with the higher-order polynomial kinematic model. The modeling of the cutout is achieved through the equations of one-quarter of the plate and extended further to join for all four quarters. The model generosity is checked through analyzing the frequencies for variable geometrical shapes (plate, cylindrical, spherical, hyperboloid and elliptical), material properties and boundary conditions. Also, the results are verified for the variable cutout shapes (square and rectangular) and the sizes by comparing the results with published numerical modal values. This is the maiden experimental verification to show the inevitability of higher-order numerical model for the computation of eigenvalues of the laminated composite components with cutout. Lastly, the conclusions are deliberating the effect either individual or the combined design-dependent structural parameters (aspect ratios, thickness ratios, curvature ratios and different end boundary constraints including the sizes of cutout) by solving different examples.

模态响应的变化是由于形状（正方形/矩形）和切口浸渍复合板（玻璃/环氧树脂）的尺寸变化所引起的，使用高阶有限元公式进行了数值预测。通过将模态值与实验记录的数据进行比较以验证目的（包括实验的复合特性），从而验证了所提出模型的准确性。采用等参有限元公式，结合高阶多项式运动学模型，对分层面板构型进行建模。切口的建模是通过四分之一板的方程式实现的，并扩展到四分之四。通过分析各种几何形状（板，圆柱，球形，双曲面和椭圆形），材料属性和边界条件。此外，通过将结果与已发布的数值模态值进行比较，可以验证可变切口形状（正方形和矩形）和尺寸的结果。这是首次实验验证，表明了高阶数值模型在计算带孔的层压复合材料构件的特征值时的必然性。最后，结论是通过解决不同的示例来研究单独的或组合的取决于设计的结构参数（长宽比，厚度比，曲率比和不同的端边界约束，包括切口的大小）的影响。通过将结果与已发布的数值模态值进行比较，可以验证可变切口形状（正方形和矩形）和尺寸的结果。这是首次实验验证，表明了高阶数值模型在计算带孔的层压复合材料构件的特征值时的必然性。最后，结论是通过解决不同的实例来研究单独的或组合的取决于设计的结构参数（长宽比，厚度比，曲率比和不同的端边界约束，包括切口的尺寸）的影响。通过将结果与已发布的数值模态值进行比较，可以验证可变切口形状（正方形和矩形）和尺寸的结果。这是首次实验验证，表明了高阶数值模型在计算带孔的层压复合材料构件的特征值时的必然性。最后，结论是通过解决不同的示例来研究单独的或组合的取决于设计的结构参数（长宽比，厚度比，曲率比和不同的端边界约束，包括切口的大小）的影响。这是首次实验验证，表明了高阶数值模型在计算带孔的层压复合材料构件的特征值时的必然性。最后，结论是通过解决不同的示例来研究单独的或组合的取决于设计的结构参数（长宽比，厚度比，曲率比和不同的端边界约束，包括切口的大小）的影响。这是首次实验验证，表明了高阶数值模型在计算带孔的层压复合材料构件的特征值时的必然性。最后，结论是通过解决不同的实例来研究单独的或组合的取决于设计的结构参数（长宽比，厚度比，曲率比和不同的端边界约束，包括切口的尺寸）的影响。