Experiments on interactive buckling in optimized stiffened panels

R Butler, M Lillico, G W Hunt, N J McDonald

Research output: Contribution to journalArticle

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Abstract

Five aluminium. blade stiffened panels of three different geometries were tested in compression in a displacement controlled loading apparatus. Panel designs were achieved using VICONOPT, a fast-running optimization package based on linear eigenvalue buckling theory, and embrace two different design philosophies. The panels were loaded beyond initial buckling to collapse, and the effects of initial overall imperfections were monitored. In all cases the final failure showed evidence of significant interaction between buckling modes. The tests draw particular attention to a violently unstable and unpredictable form of failure, involving a combination of overall and stiffener buckling, which can occur even when initial buckling in the skin has the effect of pushing the panel in the opposite sense.
LanguageEnglish
Pages40-48
Number of pages9
JournalStructural and Multidisciplinary Optimization
Volume23
Issue number1
StatusPublished - 2001

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Buckling
Experiment
Experiments
Imperfections
Blade
Aluminum
Skin
Compaction
Compression
Unstable
Eigenvalue
Defects
Geometry
Optimization
Interaction
Design

Cite this

Experiments on interactive buckling in optimized stiffened panels. / Butler, R; Lillico, M; Hunt, G W; McDonald, N J.

In: Structural and Multidisciplinary Optimization, Vol. 23, No. 1, 2001, p. 40-48.

Research output: Contribution to journalArticle

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