Stiffener chamfering was developed to eliminate wrinkles of composite laminate and buckling of the fiber during co-bonding of stiffened composites.The evolution pattern of wrinkles and buckling under different chamfering angle were studied by section metallographic microscopic analysis.The influence of chamfering angle on stiffened panel rigidity was analyzed by building a cantilever beam model.Results revealed that wrinkles of composite laminate was eliminated after chamfering of stiffener,and as the chamfering angle decreases,the buckling of the fiber decreased gradually,the rigidity of the stiffened panel increased first and then decreased.Thus,the 30° chamfering of the stiffener was appropriate during co-bonding of stiffened composites.
Peng Jian, Cheng Yong, Zhu Junjun, Yang Bowen
. Influence of the stiffener chamfering on the wrinkle of composite laminate and buckling of the fiber[J]. New Chemical Materials, 2021
, 49(8)
: 169
-173
.
DOI: 10.19817/j.cnki.issn 1006-3536.2021.08.035
[1] 刘善国.国外飞机先进复合材料技术[J].航空制造技术,2014,463(19):26-31.
[2] Marín L,Trias D,Badalló P,et al.Optimization of composite stiffened panels under mechanical and hygrothermal loads using neural networks and genetic algorithms[J].Composite Structures,2012,94(11):3321-3326.
[3] 刘文,古武,崔博,等.复合材料J型加筋壁板制造技术研究[J].航空制造技术,2017,60(16):70-74.
[4] Wang X,Xie F,Li M,et al.Influence of tool assembly schemes and integral molding technologies on compaction of T-stiffened skins in autoclave process[J].Journal of Reinforced Plastics and Composites,2010,29(9):1311-1322.
[5] 徐荣章,凌晓涛,贾利勇.成型工艺对复合材料帽型加筋板轴压特性的影响[J].材料工程,2018,46(4):152-157.
[6] 中国航空研究院.复合材料结构稳定性分析指南[M].北京:航空工业出版社,2002:34-35.
[7] 朱攀星,杨绍昌,郭俊刚,等.某大型客机复合材料中央翼加筋上壁板制造技术研究[J].国防制造技术,2016(2):25-28.
[8] Kim G H,Choi J H,Kweon J H.Manufacture and performance evaluation of the composite hat-stiffened panel[J].Composite Structures,2010,92(9):2276-2284.
[9] 卓鹏,刘强,赵龙,等.复合材料褶皱与试件性能的关系研究[J].航空制造技术,2014,459(15):101-102.
[10] 徐子航,刘东,钱群,等.连续纤维增强热塑性复合材料热变形性能研究进展[J].玻璃钢/复合材料,2015(10):83-86.
[11] 陈洁,顾轶卓,李敏,等.碳纤维/环氧预浸料摩擦滑移特性测试及其变化规律[J].复合材料学报,2014,31(1):101-106.
[12] 李树健,湛利华,周源琦,等.先进树脂基复合材料固化过程的铺放缺陷演变规律研究[J].宇航材料工艺,2018,48(2):20-24.
[13] 周正根.界面缺陷和桁条倒角对CFRP加筋板极限承载能力影响的研究[D].武汉:武汉理工大学,2018.
