期刊
AEROSPACE SCIENCE AND TECHNOLOGY
卷 100, 期 -, 页码 -出版社
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.ast.2020.105777
关键词
Failure analysis; Anisogrid lattice cylinder; Buckling; Equivalent method
资金
- National Natural Science Foundation of China [11972184, 11802212, 11672130]
- State Key Laboratory of Mechanics and Control of Mechanical Structures [MCMS-0217G03]
- Nanjing University of Aeronautics and Astronautics Graduate Innovation Fund [kfjj20160106]
To reveal the failure of carbon fiber reinforced composite (CFRC) anisogrid lattice cylinders, a multifailure theory is proposed, including global buckling, local in-plane buckling, local out-of-plane buckling, Euler buckling and material failure. The global buckling is analyzed by Ritz buckling analysis through the equivalent continuum method and verified by the finite element modeling(FEM) covering different representative sizes and previous experimental results. A parametric analysis is performed to reveal the effects of the rib thickness, the rib height and the number of helical ribs and hoop ribs, on the critical load and failure modes. Failure maps are deduced to figure out the optimal route for lightweight design of the CFRC anisogrid cylinder. The theory will serve as a reference to design composite anisogrid lattice cylinders with high specific strength and stiffness. (C) 2020 Elsevier Masson SAS. All rights reserved.
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