复合材料层板开孔拉伸损伤分析

针对纤维增强复合材料层板开孔拉伸, 将复合材料层板的失效分为层内失效和层间失效, 建立了复合材料层板开孔拉伸损伤分析模型。该模型基于逐渐损伤分析, 对不同复合材料开孔层板进行了失效预测, 并与文献试验结果进行了对比, 破坏强度和失效模式均与文献试验结果非常吻合。结果表明本文中所建立的层板开孔拉伸损伤分析模型能够模拟含孔层合板拉伸过程中的损伤起始、 损伤扩展和最终破坏模式, 并最终预测含孔层合板拉伸失效模式和破坏强度。

Damage analysis of open-hole tension laminates

A model for the damage analysis of the open-hole tension composite laminates was developed. The model divided the failure modes of composite laminates into intra-laminar and inter-laminar damage. The model simulated damage initiation, damage progression, final damage and predicted failure mode and failure load of laminates with central circular holes subjected to tensile load based on progressive failure analysis methodology. The failure modes and failure loads of different laminates were predicted and compared with the experimental results. The results show that the model could predict the failure mode and failure load of open-hole tension laminates exactly.