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

Brian G Falzon; Andrea A Faggiani; Dominik Brunner

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

Brian G Falzon
, Andrea A Faggiani
, Dominik Brunner

Research output: Chapter in Book / Conference Paper › Conference Paper › peer-review

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 language	English
Title of host publication	28th Congress of the International Council of the Aeronautical Sciences (ICAS 2012)
Place of Publication	Brisbane; Australia
Pages	2325-2331
Number of pages	7
Volume	3
Publication status	Published - 2012

Bibliographical note

28th Congress of the International Council of the Aeronautical Sciences (ICAS 2012)
23 - 28 September 2012
Brisbane, Australia

Keywords

Carbon fibre composites Genetic algorithms Mode-jumping Optimisation Aerodynamics Finite element method Fracture mechanics Plates (structural components) Composite plates Experimental and numerical studies Optimisations Secondary instability Stiffened composite panel Structural failure Optimization

Access to Document

https://icas.org/icas_archive/ICAS2012/PAPERS/973.PDF

Cite this

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title = "Lay-up optimisation of composite plates to delay mode-jump instabilities",

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.",

keywords = "Carbon fibre composites Genetic algorithms Mode-jumping Optimisation Aerodynamics Finite element method Fracture mechanics Plates (structural components) Composite plates Experimental and numerical studies Optimisations Secondary instability Stiffened composite panel Structural failure Optimization",

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note = "28th Congress of the International Council of the Aeronautical Sciences (ICAS 2012) 23 - 28 September 2012 Brisbane, Australia",

year = "2012",

language = "English",

volume = "3",

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AU - Falzon, Brian G

AU - Faggiani, Andrea A

AU - Brunner, Dominik

N1 - 28th Congress of the International Council of the Aeronautical Sciences (ICAS 2012) 23 - 28 September 2012 Brisbane, Australia

PY - 2012

Y1 - 2012

N2 - 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.

AB - 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.

KW - Carbon fibre composites Genetic algorithms Mode-jumping Optimisation Aerodynamics Finite element method Fracture mechanics Plates (structural components) Composite plates Experimental and numerical studies Optimisations Secondary instability Stiffened com

UR - https://www.scopus.com/pages/publications/84878665059

M3 - Conference Paper

VL - 3

SP - 2325

EP - 2331

BT - 28th Congress of the International Council of the Aeronautical Sciences (ICAS 2012)

CY - Brisbane; Australia

ER -

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

Abstract

Bibliographical note

Keywords

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