Stability of composite stiffened panels under compression

被引：0
|
作者：
Shi J. [1 ]
Zhao J. [2 ]
Liu C. [1 ]
Li D. [1 ]
机构：
[1] Beijing Aeronautical Science & Technology Research Institute of Commercial, Aircraft Corporation of China, LTD., Beijing
[2] Beijing ROCOSN Engineering Management CO. LTD., Beijing
来源：
Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica | 2020年 / 37卷 / 06期
关键词：
Arc-length method; Buckling; Compression stability; Eigenvalue; Engineering method; Stiffened panels;
D O I：
10.13801/j.cnki.fhclxb.20190917.003
中图分类号：
学科分类号：
摘要：
Experiments for compression stability analysis were conducted on composite stiffened panels SC-1 and SC-2 with different T-stringer lay-ups. A proposed engineering method was introduced to predict the buckling load and the least post-buckling carrying capability, and finite element analysis with eigenvalue method and arc-length method were carried out to investigate the bucking load, buckling mode, and post-buckling carrying capability. Experiment results show that SC-1 with more stringer ply-ups possess the higher local bucking strain of skin and the higher buckling load of the panel, and SC-2 can sustain a post-buckling carrying capability of 2.4 times of buckling load without material damage and stringer-skin debonding. The engineering method and eigenvalue method acquire the buckling loads of the panels with errors of -9.3% and -2.8% respectively, and the minimum post-buckling carrying capability of SC-2 is 2.09 times of experimental buckling load by engineering method. The errors of buckling loads by arc-length method are less than 1% for both SC-1 and SC-2, and the buckling modes and distortion are well trailed with load increasing. © 2020, Editorial Office of Acta Materiae Compositae Sinica. All right reserved.
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页码：1321 / 1333
页数：12
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