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

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

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

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

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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 2012, ICAS 2012
Pages	2325-2331
Number of pages	7
Publication status	Published - 01 Dec 2012
Externally published	Yes
Event	28th Congress of the International Council of the Aeronautical Sciences 2012, ICAS 2012 - Brisbane, Australia Duration: 23 Sep 2012 → 28 Sep 2012

Publication series

Name	28th Congress of the International Council of the Aeronautical Sciences 2012, ICAS 2012
Volume	3

Conference

Conference	28th Congress of the International Council of the Aeronautical Sciences 2012, ICAS 2012
Country	Australia
City	Brisbane
Period	23/09/2012 → 28/09/2012

Keywords

Carbon fibre composites
Genetic algorithms
Mode-jumping
Optimisation

ASJC Scopus subject areas

Aerospace Engineering
Control and Systems Engineering
Electrical and Electronic Engineering
Materials Science(all)

Access to Document

Link to publication in Scopus

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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",

author = "Falzon, {B. G.} and A. Faggiani and D. Brunner",

year = "2012",

month = dec,

day = "1",

language = "English",

isbn = "9781622767540",

series = "28th Congress of the International Council of the Aeronautical Sciences 2012, ICAS 2012",

pages = "2325--2331",

booktitle = "28th Congress of the International Council of the Aeronautical Sciences 2012, ICAS 2012",

note = "28th Congress of the International Council of the Aeronautical Sciences 2012, ICAS 2012 ; Conference date: 23-09-2012 Through 28-09-2012",

}

Falzon, BG, Faggiani, A & Brunner, D 2012, Lay-up optimisation of composite plates to delay mode-jump instabilities. in 28th Congress of the International Council of the Aeronautical Sciences 2012, ICAS 2012. 28th Congress of the International Council of the Aeronautical Sciences 2012, ICAS 2012, vol. 3, pp. 2325-2331, 28th Congress of the International Council of the Aeronautical Sciences 2012, ICAS 2012, Brisbane, Australia, 23/09/2012.

Lay-up optimisation of composite plates to delay mode-jump instabilities. / Falzon, B. G.; Faggiani, A.; Brunner, D.

28th Congress of the International Council of the Aeronautical Sciences 2012, ICAS 2012. 2012. p. 2325-2331 (28th Congress of the International Council of the Aeronautical Sciences 2012, ICAS 2012; Vol. 3).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Lay-up optimisation of composite plates to delay mode-jump instabilities

AU - Falzon, B. G.

AU - Faggiani, A.

AU - Brunner, D.

PY - 2012/12/1

Y1 - 2012/12/1

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

KW - Genetic algorithms

KW - Mode-jumping

KW - Optimisation

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SN - 9781622767540

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

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Y2 - 23 September 2012 through 28 September 2012

ER -