Numerical simulations are presented of a recently developed test which creates multiple delaminations in a CFRP laminate specimen that grow and interact via transverse matrix cracks [1]. A novel shell element enriched with the Floating Node Method, and a damage algorithm based on the Virtual Crack Closure Technique, were used to successfully simulate the tests. Additionally, a 3D high mesh fidelity model based on cohesive zones and continuum damage mechanics was used to simulate the tests and act as a representative of other similar state-of-the-art high mesh fidelity modeling techniques to compare to the enriched shell element. The enriched shell and high mesh fidelity models had similar levels of accuracy and generally matched the experimental data. With runtimes of 36 min for the shell model and 55 h for the high mesh fidelity model, the shell model is 92 times faster than the high-fidelity simulation.

数值模拟介绍了最近开发的一项测试，该测试在 CFRP 层压板样本中产生多个分层，这些分层通过横向基体裂纹生长并相互作用 [1]。使用浮节点法丰富的新型壳单元和基于虚拟裂纹闭合技术的损伤算法成功地模拟了测试。此外，基于粘性区域和连续损伤力学的 3D 高网格保真度模型用于模拟测试，并作为其他类似的最先进的高网格保真度建模技术的代表，与丰富的壳单元进行比较。丰富的壳和高网格保真度模型具有相似的精度水平，并且与实验数据基本匹配。壳模型的运行时间为 36 分钟，高网格保真度模型的运行时间为 55 小时，壳模型比高保真模拟快 92 倍。