【摘要】 为探究纤维褶皱缺陷（凹陷）对复合材料层合板压缩强度的影响，本文通过试验与数值仿真相结合的方法，对含纤维凹陷的复合材料层合板进行压缩试验，并基于Abaqus平台建立凹陷程度不同的复合材料层合板的三维有限元模型，采用PUCK失效准则和粘聚区模型模拟纤维断裂与分层损伤进行仿真分析，通过仿真与试验结果的对比，验证了模型可以对含凹陷褶皱复合材料层合板的损伤情况进行准确预测。结合仿真与试验的结果，发现纤维凹陷会显著降低层合板的压缩失效载荷，失效模式随H/D增大由纤维断裂主导转向分层损伤主导，并且随着H/D增大，压缩失效载荷呈非线性下降趋势。更多还原

【Abstract】 The effect of fiber waviness defects on the compressive strength of composite laminates was investigated through an integrated experimental and numerical approach. The compression tests were conducted on specimens with wrinkles. A three-dimensional finite element model was developed by using the Abaqus, incorporating the PUCK failure criterion and a cohesive zone model to simulate fiber fracture and interlaminar damage. The numerical predictions showed good agreement with experimental results, validating the model’s accuracy in predicting damage behavior in laminates with fiber waviness. The results indicate that fiber waviness significantly reduces the compressive failure load of the laminates. As the H/D ratio increases, the dominant failure mode shifts from fiber fracture to delamination damage, and the compressive failure load exhibits a nonlinear decreasing trend.更多还原