缝合增强PRSEUS构件低速冲击性能研究  

Research of the low-velocity impact performance of stitch-reinforced PRSEUS.components

作　　者：田潇 文立伟[1] 邓朱海 TIAN Xiao;WEN Liwei;DENG Zhuhai(School of Materials Science and Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)

机构地区：[1]南京航空航天大学材料科学与技术学院,南京210016

出　　处：《复合材料科学与工程》2024年第4期63-75,共13页Composites Science and Engineering

基　　金：国家基础科研项目(50922020402)。

摘　　要：PRSEUS结构作为针对翼身融合布局的典型结构单元,受载情况复杂。使用缝合技术将加筋结构与蒙皮一体化制备,提高了机身载荷传递能力,提高了PRSEUS结构整体一致性,能够充分发挥PRSEUS结构的承载效率。通过现有条件制备缝合PRSEUS构件,并开展低速冲击试验研究,发现缝合密度或是缝线细度的增加都可以提高试样的抗冲击性能,缝线细度增大带来的抗冲击性能提升相比缝合密度增大影响相对较小。PRSEUS结构的抗冲击性能对于缝合密度更加敏感。有限元分析结果表明,缝合试样的层间性能得到明显改善,损伤面积减小,证明缝合可以有效提高PRSEUS结构抗冲击性能。As a typical structural unit for wing-fuselage fusion layout,the PRSEUS structure is subjected to.complex loading conditions.The use of stitching technology to integrate the reinforced structure with the skin can improve the load transfer capability of the fuselage,improve the overall consistency of the PRSEUS structure,and give full play to the loading efficiency of the PRSEUS structure.By preparing stitched PRSEUS.components under existing conditions and carrying out experimental studies of low velocity impact,it was found that the increase of either stitch density or stitch fineness can improve the impact resistance of the specimens,and the impact resistance improvement brought by the increase in stitch fineness was relatively small.compared to the increase in stitch density.The impact resistance performance of PRSEUS structure is more sensitive to the stitching density.The results of finite element analysis showed that the interlayer properties of the stitched specimens were significantly improved and the damage area was reduced,which proved that stitching can effectively improve the impact resistance of PRSEUS structures.

关 键 词：缝合 复合材料 PRSEUS 低速冲击性能 有限元模拟 

分 类 号：TB332[一般工业技术—材料科学与工程]