铝蜂窝夹层结构穿孔损伤复合材料修理技术研究  

Research on composite material repair technology for perforated damage of aluminum honeycomb sandwich structure

作　　者：季国梁 薛晓 刘文浩 JI Guoliang;XUE Xiao;LIU Wenhao(Technology Center,State-owned Wuhu Machinery Factory,Wuhu 241000,China)

机构地区：[1]国营芜湖机械厂技术中心,芜湖241000

出　　处：《航空工程进展》2023年第5期120-127,共8页Advances in Aeronautical Science and Engineering

摘　　要：铝蜂窝夹层结构穿孔损伤的高效、低成本修理对保障航空装备的完好性具有重要意义。针对铝蜂窝夹层结构穿孔损伤金属面板提出复合材料碳纤维湿补片胶接修理工艺,结合飞机典型铝蜂窝夹层结构形式制备完好和穿孔损伤试样,对穿孔损伤试样开展复合材料胶接修理,建立铝蜂窝夹层结构复合材料挖补胶接修理后四点弯强度分析有限元仿真分析模型,并通过仿真计算分析穿孔损伤大小对铝蜂窝夹层结构四点弯强度的影响规律及修复后强度恢复情况。结果表明:复合材料挖补胶接修理可有效恢复穿透损伤铝蜂窝夹层结构的弯曲强度;有限元仿真计算结果与试验结果基本一致,仿真模型能够较为准确地计算各类试样的极限载荷及失效模式;当损伤范围≤φ30 mm(径宽比小于40%)时,复合材料胶接修理工艺可应用于飞机铝蜂窝夹层结构损伤修理中。The high efficiency and low cost repair of perforation damage of aluminum honeycomb sandwich struc⁃ture is of great significance to ensure the integrity of aviation equipment.A composite carbon fiber wet patch bond⁃ing repair process is proposed for metal panels with perforated damage in aluminum honeycomb sandwich struc⁃tures.Combined with typical aluminum honeycomb sandwich structures in aircraft,intact and perforated damage samples are prepared,and composite bonding repair is carried out on perforated damage samples.A finite element simulation analysis model for four point bending strength analysis of aluminum honeycomb sandwich structure after patching and bonding repair is established,and the influence of perforation damage size on the four point bending strength of aluminum honeycomb sandwich structure and the strength recovery after repair are analyzed through sim⁃ulation calculation.The results show that the bending strength of aluminum honeycomb sandwich structure can be effectively restored by using composite materials bonding method.The results of finite element simulation are in good agreement with the experimental results.The simulation model can accurately calculate the ultimate load and failure mode of all kinds of samples.The simulation results show that when the damage range is≤φ30 mm(diame⁃ter to width ratio is less than 40%),the adhesive repair technology of composite materials can be applied to the dam⁃age repair of aluminum honeycomb sandwich structures of aircraft.

关 键 词：铝蜂窝 损伤修理 复合材料 强度 有限元仿真 

分 类 号：V267[航空宇航科学与技术—航空宇航制造工程]