22nd Congress of International Council of the Aeronautical Sciences, Harrogate, UK, 28 August - 1st September, 2000
Paper ICAS 2000-4.2.2

STABILITY OF BUILT-UP CYLINDRICAL STRUCTURES WITH CONSIDERATION OF PLASTIC AND POSTBUCKLING BEHAVIOR OF THIN WALLED COMPONENTS

G. N. Zamula, K. M. Ierusalimsky
Central Aerohydrodinamic Institute (TsAGI), Russia

Keywords: structure, stability, buckling, nonlinear, numerical

Consideration is given to the challenging problem of accordance the theoretical and experimental data on stability in the case of compression and bending of stiffened shells (powerful stiffeners and thin skin) typical of fuselages of state-of-the-art transport airplanes. Numerically obtained data were compared with results of testing the semi-full-scale cylindrical shells; in the average, the theoretical critical load is slightly higher than the critical test load. Note that not taking into account the plastic and postbuckling behavior of elements does lead to much larger discrepancy between numerical analyses and experiments.

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