【摘要】 本文基于经典层合板理论，借助等几何分析法和有限胞元法，针对不同开孔形状、开孔尺寸和开孔数量的变角度复合材料多孔层合板的屈曲问题进行了研究．并与现有文献或有限元结果进行对比，验证了此方法处理变角度复合材料多孔板屈曲问题的收敛性和正确性．进一步，对多种边界条件和纤维路径下含单孔或多孔的变角度纤维复合材料层合板进行了参数化屈曲分析．结果表明，合理的纤维铺设角度可以显著减少由于开孔造成的屈曲性能损失．更多还原

【Abstract】 Based on the classical laminated plate theory, this study investigates the buckling problem of Variable Angle Tow(VAT) composite laminates with multiple cutouts by employing the finite cell method and isogeometric analysis. The buckling behavior of such laminates with various cutout shapes, sizes, and numbers is analyzed. Comparisons with existing literature or finite element results are conducted to verify the convergence and accuracy of the proposed method in addressing the buckling of VAT composite laminates with multiple cutouts. Furthermore, a parametric buckling analysis is carried out for VAT composite laminates with single or multiple cutouts under different boundary conditions and fiber paths. The results indicate that reasonable fiber angles can significantly minimize the loss of buckling performance induced by cutouts.更多还原