李晓峰+曲贵民

摘 要：采用不同冲击能量对玻璃纤维增强铝合金层合板（GLARE层合板）进行落锤低速冲击试验，得到了冲击载荷、位移和能量与时间的关系曲线。在不同冲击能量下，对层合板的冲击响应以及冲击过程中的损伤演化进行了分析。结果表明，不同冲击能量下基体压缩损伤面积随着冲击能量的增大而增大， 而冲击能量相同时，受冲击面方向的第一、二层基体拉伸损伤面积远大于第三、四层，玻璃纤维/环氧树脂预浸料的铺层顺序以及方向是影响层合板抗冲击性能的主要因素。基于ABAQUS建立了GLARE层合板的低速冲击有限元分析模型，数值模拟结果说明：在低能量冲击时采用延性损伤准则作为铝合金材料的损伤判据是合理的。

关键词：GLARE层合板；低速冲击；能量；有限元分析；损伤

DOI：10.15938/j.jhust.2017.06.027

中图分类号： V257

文献标志码： A

文章编号： 1007-2683（2017）06-0140-07

Abstract：Through the drop weight tests on Glass fiber reinforced aluminum laminates being performed with different impact energy at low speed， the curve of impact load， deflection， and energy histories for each tests were obtained. The dynamic response and impact damage evolution of GLARE laminates under different impact energy were analyzed. The results show that the damage area of matrix compression under different impact energy increases with the increase of impact energy. At the time of same Impact energy， the tensile damage area of the first and second substrate of the hit plan was far greater than the third and fourth floors， and glass fiber/epoxy resin layer sequence and direction of presoak material were the main factors influencing the laminates lowspeed Impact Resistance. The finite element analysis model of lowspeed impact of laminates was built based on ABAQUS. The numerical simulation results show that in low energy impact by means of the criterion of ductile damage as a damage criterion of aluminum alloy material is reasonable.

Keywords：GLARE laminates； lowspeed impact； energy； finiteelement analysis； damage

玻璃纤维增强铝合金层合板（glass fiber reinforced aluminum laminates，GLARE层合板）是将玻璃纤维/环氧树脂预浸料与高强度的铝合金薄板交替铺层，在特定的温度和压力下固化成型。GLARE层合板同时具备铝合金薄板以及玻璃纤维/环氧树脂预浸料的优点。与铝合金薄板相比，GLARE层合板具有更高的损伤容限、更好防火性能、更低的密度以及抗腐蚀性能，并且，在冲击和疲劳方面尤为凸显。GLARE层合板更易于加工及切割是与玻璃纤维/环氧树脂预浸料相比的优势。正因为这些优良的机械性能，GLARE层合板被广泛运用于航空领域。在空客A380 的机身上部外壳和尾翼的主边缘使用了大约5000平方英尺GLARE层合板材料[1-2]。……