设计了复合材料J型加筋板轴压试验件形式和加载方式,试验研究了其承载能力和破坏形式,讨论了轴压下复合材料加筋板件承载能力预测的有限元建模和分析方法,数值分析了加筋板屈曲和后屈曲模式,结果表明如果不考虑损伤累积对结构承载能力的影响,预测值将明显偏高;而通过引入逐步破坏准则,考虑了基体破坏、纤维基体剪切失效以及纤维断裂等损伤累积对结构承载能力的影响,可以提高数值预测精度。 The form and loading method of the J-type stiffened plate under axial compression were designed. The bearing capacity and failure mode of the composite J-stiffened plate were studied. The finite element modeling and analysis method for predicting the bearing capacity of composite stiffened plate under axial compression , The buckling and post-buckling modes of the stiffened plate are numerically analyzed. The results show that the predicted value will be obviously high if the damage accumulation does not take into account the bearing capacity of the structure. By introducing the criterion of progressive failure, the failure of the matrix, Failure and fiber breakage damage accumulation on the structure of the bearing capacity, can improve the numerical prediction accuracy.