2010
DOI: 10.1142/s0219455410003804
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Optimization of Composite Aircraft Structures in Consideration of Postbuckling Behavior

Abstract: An approach is presented to determine the design that minimizes the weight in consideration of the postbuckling behavior of stiffened composite panels. Since, due to computational expense, for optimization purposes a nonlinear finite element approach is not appropriate, a semianalytical approach is implemented in the EADS MAS software LAGRANGE. A gradient-based optimization scheme is employed to determine the ply thicknesses and fiber orientation of the composite skins and the cross-sectional areas of the stif… Show more

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Cited by 8 publications
(2 citation statements)
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“…1 The software enables the analysis and optimisation of large structures, such as fuselage barrels [30]. It was applied successfully within several civil and military projects (see Schuhmacher et al [41], Daoud and Calomfirescu [17] and Calomfirescu et al [14]). The incorporated linear finite element solver is similar to the commercial software MSC NASTRAN.…”
Section: Introductionmentioning
confidence: 99%
“…1 The software enables the analysis and optimisation of large structures, such as fuselage barrels [30]. It was applied successfully within several civil and military projects (see Schuhmacher et al [41], Daoud and Calomfirescu [17] and Calomfirescu et al [14]). The incorporated linear finite element solver is similar to the commercial software MSC NASTRAN.…”
Section: Introductionmentioning
confidence: 99%
“…The design of composite structures is most often dominated by buckling [1,2]. For example, the demands for fuel efficiency are prompting the aircraft industry to revolutionize airframe construction to save weight, and thus fuel.…”
Section: Introductionmentioning
confidence: 99%