A constitutive damage model is proposed in order to investigate the crushing response of \(0^{\circ }\) plies composite laminates, using a VUMAT subroutine implemented in ABAQUS/Explicit. This damage model predicts five failure mechanisms commonly observed in unidirectional carbon fibre-reinforced composite structures: fibre failure in tension, fibre failure in compression, matrix cracking in tension, matrix cracking in compression and in-plane shear failure. Its formulation is based on an energy framework which combines stress-based fracture mechanics and damage mechanics approaches within a unified way, enabling the prediction of the five failure mechanisms aforementioned in terms of damage initiation and damage propagation. In this work, a new strategy is also implemented to remove fully damage elements in order to ensure numerical stability and avoid element distortion problems. An experimental test campaign is proposed for verification of the numerical models. Preliminary results have shown a fairly good correlation between numerical predictions and experimental results for wedge-shaped tip composite laminates.

为了研究\（0 ^ {\ circ} \）的压溃响应，提出了本构损伤模型。使用在ABAQUS / Explicit中实现的VUMAT子例程对复合层压板进行铺层。该损伤模型预测了在单向碳纤维增强复合材料结构中通常观察到的五种破坏机理：拉伸时的纤维破坏，压缩时的纤维破坏，拉伸时的基体开裂，压缩时的基体开裂和面内剪切破坏。它的表述基于一个能量框架，该能量框架以统一的方式结合了基于应力的断裂力学和损伤力学方法，从而能够根据损伤的引发和损伤传播来预测上述五个失效机理。在这项工作中，还采用了一种新的策略来删除完全损坏的元素，以确保数值稳定性并避免元素变形问题。建议进行实验测试以验证数值模型。初步结果表明，楔形尖端复合材料层压板的数值预测与实验结果之间具有相当好的相关性。