Lay-up optimization of composite plates to delay mode-jump instabilities

B. G. Falzon, A. Faggiani, D. Brunner

Research output: Contribution to conferencePaper

Abstract

Experimental and numerical studies have shown that the occurrence of abrupt secondary instabilities, or mode-jumps, 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 postbuckling composite plates to delay the onset of mode-jump instabilities. A simple and novel approach for detecting modejumps is proposed, based on the RMS value of out-of-plane pseudo-velocities at a number of locations distributed over the postbuckling structure
Original languageEnglish
Number of pages7
Publication statusPublished - 28 Sep 2012
Event28th International Congress of the Aeronautical Sciences - Brisbane, Australia
Duration: 23 Sep 201228 Sep 2012

Conference

Conference28th International Congress of the Aeronautical Sciences
CountryAustralia
CityBrisbane
Period23/09/201228/09/2012

Bibliographical note

Paper ICAS2012-7.1ST

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