轴压载荷下复合材料加筋板后屈曲承载能力研究

摘要

Nonlinear finite element model for post-buckling characteristics of stiffened composite panels was established,and buckling load of hat-stiffened,T-stiffened,I-stiffened composite panels were calcu-lated,loading capacity and failure mode were predicated by progressive damage method as while. The in-fluences of cross-section shape and layup of stiffers on post-buckling characteristics and loading capacity of stiffened composite panels were studied,and the results could be used for design of composite stiffened panels.%建立了轴压载荷下复合材料加筋板后屈曲承载能力分析有限元模型,计算了航空结构中典型的工字型、T型和帽型复合材料加筋板的屈曲载荷,并采用渐进损伤分析方法对复合材料加筋板后屈曲极限破坏载荷与破坏模式进行了研究.研究了筋条截面形状、筋条铺层方式对复合材料加筋板后屈曲特性的影响,研究结果可以为复合材料加筋板的设计提供参考.