23rd Congress of International Council of the Aeronautical Sciences, 8-13 September, 2002, Toronto, Canada
Paper ICAS 2002-4.9.1

EXPERIMENTAL BUCKLING TESTS AND NUMERICAL ANALYSES OF STIFFENED CYLINDRICAL SHELLS IN COMPOSITE MATERIALS

C. Bisagni, P. Cordisco, L. Lanzi
Politecnico di Milano, Italy

Keywords: buckling, composite stiffened shells, experimental tests

The work investigates experimentally and numerically the buckling and post-buckling phenomena of CFRP stiffened thin-walled cylindrical shells. The shells are designed to work in the post-buckling field. Indeed, they present a first local buckling, limited to the cylinder skin and later a global buckling, that corresponds to the collapse load and involves the whole cylinder. The ratio between the collapse load and the local buckling load is about 4.

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