Abstract:
In order to obtain the effect laws of circular hole on the impact resistance of glass fiber reinforced aluminum (GLARE) laminates, the drop weight low velocity impact tests on GLARE laminates without hole and with a circular hole were performed with impact energy of 40 J, and the impact load, deflection, and energy-time curves were obtained. The commercial finite element software ABAQUS/Explicit finite element amalysis software was employed to simulate the tests and predict the effect of circular hole diameter on the impact resistance of GLARE laminates. The results show that the damage patterns of fiber layers in GLARE laminates are mainly delamination damage and fiber fracture under low velocity impact. The impact peak load of laminates increases with increasing distance between the edge of circular hole and impacted center, while the peak deflection decreases. The comparison between numerical simulation results and test results verifies the rationality of the model. With the increase of circular hole diameter, the impact resistance of GLARE laminates decreases gradually.