28th Congress of the International Council of the Aeronautical Sciences, 23 - 28 September 2012, Brisbane, Australia
Paper ICAS2012-7.1ST

LAY-UP OPTIMIZATION OF COMPOSITE PLATES TO DELAY MODE-JUMP INSTABILITIES

B. G. Falzon, A. Faggiani, D. Brunner*
Monash Univ., Australia; *ETH Swiss Federal Inst. of Technology, Switzerland

Keywords: carbon fibre composites, optimisation, mode-jumping, genetic algorithms

Experimental and numerical studies have shown that the occurrence of mode-jump instabilities in a postbuckling stiffened composite panel may initiate structural failure. This study presents an optimisation methodology, using a genetic algorithm and finite element analysis for the lay-up optimisation of composite panels to delay the onset of mode-jump instabilities.

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