Buckling analysis of composite stiffened plates based on IGA method

doi:10.19936/j.cnki.2096-8000.20220528.003

Abstract

Abstract: The Polynomial splines over Hierarchical T-meshes (PHT-splines) based Isogeometric Analysis (IGA) method is used to analyze the buckling characteristics of composite stiffened plates. The method realizes the accurate geometric modeling of the stiffened plates and the local refinement of the connection area between stiffeners and plates, as well as avoiding geometric errors, simplifying the refinement process, saving calculation time and promoting calculation efficiency. The correctness and convergence of the method are verified by numerical calculations. The effects of the ply number and ply angle of the stiffeners on the buckling characteristics of laminated stiffened plates are obtained. The results show that the buckling load of the laminated stiffened plates raises linearly along with the ply number. When the 0°-direction ply is fixed, the buckling load remains basically unchanged. When the ply number increases in 0°-direction and decreases in ±45°-direction or 90°-direction, the buckling load raises gradually.

Key words: PHT-splines, IGA, stiffened plates, buckling, composite

CLC Number:

TB332

QIN Xiao-chen, LI Chen, CHEN Cheng, GAO Li-min. Buckling analysis of composite stiffened plates based on IGA method[J]. COMPOSITES SCIENCE AND ENGINEERING, 2022, 0(5): 21-27.

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