论文部分内容阅读
为获得圆孔对玻璃纤维增强铝合金(GLARE)层合板抗冲击性能的影响规律,采用40J的冲击能量对无孔和含圆孔GLARE层合板进行了落锤低速冲击试验,获得了冲击载荷、挠度和能量-时间曲线。应用ABAQUS/Explicit有限元分析软件对试验进行模拟,并预测了圆孔直径对GLARE层合板抗冲击性能的影响。结果显示:在低速冲击下,GLARE层合板纤维层的失效模式以分层损伤和纤维断裂为主;随着圆孔边缘至冲击中心距离的增加,层合板的冲击载荷峰值提高,而挠度峰值减小;数值模拟结果与试验结果的比较验证了模型的合理性;随着圆孔直径的增大,GLARE层合板的抗冲击性能逐步劣化。
In order to obtain the influence of round hole on the impact resistance of glass fiber reinforced aluminum (GLARE) laminates, a 40J impact energy was used to test the GLARE laminates without holes and round holes. The impact load, Deflection and energy-time curves. The ABAQUS / Explicit finite element analysis software was used to simulate the experiment and predict the impact of the diameter of circular hole on the impact resistance of GLARE laminates. The results show that the failure mode of GLARE laminates is dominated by delamination damage and fiber fracture under the condition of low velocity impact. With the increase of the distance from the edge of the circular hole to the impact center, the peak load of laminates increases, The comparison between the numerical simulation results and the experimental results verifies the rationality of the model. With the increase of the diameter of the circular hole, the impact resistance of GLARE laminates gradually deteriorates.