Hu Haichao, Wei Qiang, Liu Boya, Liu Yun, Hu Ning, Ma Quanjin, Wang Chuancai
School of Mechanical and Engineering, Tianjin Sino-German University of Applied Sciences, Tianjin 300350, China.
School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300401, China.
Polymers (Basel). 2022 Jul 20;14(14):2946. doi: 10.3390/polym14142946.
It is known that carbon fibre-reinforced aluminium laminate is the third generation of fibre metal materials. This study investigates the response of carbon fibre-reinforced aluminium laminates (CARALL) under tensile loading and three-point bending tests, which evaluate the damage initiation and propagation mechanism. The 2D Hashin and 3D Hashin VUMAT models are used to analyse and compare each composite layer for finite element modelling. A bilinear cohesive contact model is modelled for the interface failure, and the Johnson cook model describes the aluminium layer. The mechanical response and failure analysis of CARALL were evaluated using load versus deflection curves, and the scanning electron microscope was adopted. The results revealed that the failure modes of CARALL were mainly observed in the aluminium layer fracture, fibre pull-out, fracture, and matrix tensile fracture under tensile and flexural loading conditions. The 2D Hashin and 3D Hashin models were similar in predicting tensile properties, flexural properties, mechanical response before peak load points, and final failure modes. It is highlighted that the 3D Hashin model can accurately reveal the failure mechanism and failure propagation mechanism of CARALL.
众所周知，碳纤维增强铝层压板是第三代纤维金属材料。本研究调查了碳纤维增强铝层压板（CARALL）在拉伸载荷和三点弯曲试验下的响应，这些试验评估了损伤起始和扩展机制。二维Hashin模型和三维Hashin VUMAT模型用于有限元建模时对各复合层进行分析和比较。为界面失效建立了双线性内聚接触模型，并用Johnson cook模型描述铝层。利用载荷-挠度曲线评估了CARALL的力学响应和失效分析，并采用了扫描电子显微镜。结果表明，在拉伸和弯曲载荷条件下，CARALL的失效模式主要表现为铝层断裂、纤维拔出、断裂和基体拉伸断裂。二维Hashin模型和三维Hashin模型在预测拉伸性能、弯曲性能、峰值载荷点之前的力学响应以及最终失效模式方面相似。值得注意的是，三维Hashin模型能够准确揭示CARALL的失效机制和失效扩展机制。
