This study aims to examine the effect of the diameter, number, and location of the circular cutout on the free vibration response and buckling loads of the laminated composites. Eigen-buckling and free vibrations analyses are performed for the laminated composite plates by using the finite element software ANSYS. Numerical results obtained by the finite element method are compared to the experimental ones. In the numerical analyses, the effect of the delamination around the cutout on the buckling load and the natural frequency is also examined. The critical buckling load and first natural frequency values obtained by both numerical and experimental studies are used to create a prediction model using the artificial neural networks. The Levenberg–Marquardt backpropagation algorithm is used as the training method. It is observed that both the number and location of the cutout affect the critical buckling load and first natural frequency values. Numerical and experimental results are presented together with the ANN prediction results.

这项研究旨在检查圆形切口的直径，数量和位置对层压复合材料的自由振动响应和屈曲载荷的影响。使用有限元软件ANSYS对层压复合板进行了本征屈曲和自由振动分析。通过有限元方法获得的数值结果与实验结果进行了比较。在数值分析中，还检查了切口周围的分层对屈曲载荷和固有频率的影响。通过数值和实验研究获得的临界屈曲载荷和第一固有频率值将用于使用人工神经网络创建预测模型。Levenberg–Marquardt反向传播算法用作训练方法。可以看出，切口的数量和位置都会影响临界屈曲载荷和第一固有频率值。给出了数值和实验结果，以及人工神经网络的预测结果。