A 1/3 composite cylindrical shell with a central rectangular opening was axially compressed experimentally, and its critical buckling load and displacement, and strains were measured. A finite element model (FEM) of the shell with Hashin failure criteria was established to analyze its buckling and post-buckling behaviors by nonlinear Newton-Raphson method. The geometric imperfection sensitivity and the effect of side supported conditions of the shell were investigated. It was found that the Newton-Raphson method can be used to analyze the buckling and post-buckling behaviors of the shell. The shell is not sensitive to initial geometric imperfection. And the support design of the shell by side stiffeners is a good way to obtain the critical buckling load and simplify the experimental fixture.
(1) Yihao Ma, Xiaoquan Cheng, Xin Guo, Jie Zhang — School of Aeronautic Science and Engineering, Beihang University, Beijing, 100191, China
(2) Xiaoquan Cheng — Key Laboratory of Aircraft Advanced Design Technology (Beihang University), Ministry of Industry and Information Technology, Beijing, 100191, China
(3) Zhaodi Wang, Yahong Xu — Institute 306 of the 3rd Academy of CASIC, Beijing, 100074, China.
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