Buckling and post-buckling behaviors of 1/3 composite cylindrical shell with an opening

Yihao Ma, Xiaoquan Cheng, Zhaodi Wang, Xin Guo, Jie Zhang and Yahong Xu

Abstract

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.

Key Words

composite shell; opening; post-buckling; Newton-Raphson method; FEM; axial compression

Address

(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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