针对含开孔纤维增强复合材料层压板准静态拉伸强度预测以及渐进损伤分析问题，构建了一种渐进失效数值分析模型。模型聚焦劈裂造成的应力集中缓解效应，结合有限元分析软件ABAQUS，在裂纹尖端引入了两列沿纤维方向分布的零厚度内聚力单元模拟劈裂，并沿纤维方向划分网格，有效降低了网格依赖性。应用该模型量化应力集中区的应力缓解效应，对各种开孔层压板的拉伸强度进行预测以及探究开孔层压板的渐进损伤过程，并与试验数据进行对比验证。结果表明，考虑应力集中区应力缓解效应的三维渐进损伤模型在计算开孔层压板应力集中系数(SCF)上较其他有限元模型具有更好的精度，并且在强度预测和渐进损伤模拟方面具有合理的可靠性和准确性。

A numerical analysis model for progressive failure was constructed to address the problems of quasi-static tensile strength prediction and progressive damage analysis of fiber-reinforced composite laminates containing open holes. The model focuses on the stress concentration relief effect caused by splitting, combines with the finite element analysis software ABAQUS, introduces two columns of zero-thickness cohesive cells distributed along the fibre direction at the crack tip to simulate splitting, and divides the mesh along the fibre direction, which effectively reduces the mesh dependence. The model is applied to quantify the stress relief effect in the stress concentration area, to predict the tensile strength of various open-cell laminates as well as to explore the progressive damage process of open-cell laminates, and to validate the model in comparison with experimental data. The results show that the progressive damage model considering the stress relief effect in the stress concentration zone has better accuracy than other finite element models in calculating the stress concentration factor (SCF) of open-cell laminates, and has reasonable reliability and accuracy in strength prediction and progressive damage simulation.