Post-buckling Behavior of Equal Weight Stiffened Composite Panels under Axial Compression

被引：0

作者：

Zhang, Guofan ^{[1
]}

Wan, Chunhua ^{[1
]}

Nie, Xiaohua ^{[1
]}

机构：

[1] Aircraft Strength Res Inst China, Natl Key Lab Strength & Struct Integr, Xian, Shaanxi, Peoples R China

来源：

PROCEEDINGS OF THE 2024 3RD INTERNATIONAL SYMPOSIUM ON INTELLIGENT UNMANNED SYSTEMS AND ARTIFICIAL INTELLIGENCE, SIUSAI 2024 | 2024年

关键词：

Composite; Stiffened panel; Failure test; Post-buckling; Progressive damage; DEGRADATION; SIMULATION; DESIGN;

D O I：

10.1145/3669721.3674608

中图分类号：

TP18 [人工智能理论];

学科分类号：

081104 ; 0812 ; 0835 ; 1405 ;

摘要：

The failure mode and loading bearing capacity of composite panels with I shape stiffeners under axial compression load were investigated. The FEM nonlinear progressive damage models of stiffened composite panels considering fiber/matrix failure, interface debonding and stiffness degradation were established. The buckling load, ultimate load and failure process of panels predicted by numerical models was studied by comparison with the test, and the relative errors are all less than 8%, which indicates the accuracy of the analysis model. Further, the fluence on load bearing efficiency of equal weight stiffened panel with different cross-section sizes was carried out, and the optimal design scheme was determined. The influence of the B/A ratio of different stiffener sizes on the bearing characteristics of stiffened panels was also studied. The results show that the bearing capacity of 6 # panel (B/A =1.40) is the highest, and its load bearing efficiency reaches 200.4N/g, which provides experimental and analytical reference for the engineering application of stiffened composite structures.

引用

页码：379 / 384

页数：6

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