1979
DOI: 10.2514/3.58565
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Preliminary Design of Composite Wings for Buckling, Strength, and Displacement Constraints

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Cited by 277 publications
(48 citation statements)
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“…Thus extensive research efforts have been devoted to the analysis and optimization of composite wing structures in connection with flutter, natural frequency, and flight loads [1][2][3][4][5]. Starnes and Haftka [1] employed a multi-level approach based on the mathematical programming method for designing composite wing structures. The conservative constraint approximation and approximate second derivatives of the penalty terms were used to obtain minimum mass designs.…”
Section: Introductionmentioning
confidence: 99%
“…Thus extensive research efforts have been devoted to the analysis and optimization of composite wing structures in connection with flutter, natural frequency, and flight loads [1][2][3][4][5]. Starnes and Haftka [1] employed a multi-level approach based on the mathematical programming method for designing composite wing structures. The conservative constraint approximation and approximate second derivatives of the penalty terms were used to obtain minimum mass designs.…”
Section: Introductionmentioning
confidence: 99%
“…In this study, the wingtip deflection for the CRM wing at a 2.5 g pull-up maneuver is assumed to be 15% of the wing semi-span b. This is based on the relative deformations that can be expected in the wing of a transport-category aircraft as a function of the load factor, as presented in the open scientific literature [19,42]. This value also ensures that the aircraft wingtip does not strike the ground during a taxi bump load or landing operation.…”
Section: Static Stiffness Constraintsmentioning
confidence: 99%
“…These techniques resurrected the use of mathematical programming for structural optimization. Starnes, Jr. and Haftka [19] overcame the difficulties in using approximation techniques for some constraints, such as buckling, by introducing the concept of conservative constraint approximations.…”
Section: Introductionmentioning
confidence: 99%
“…It is in nature the Taylor series expansion in terms of reciprocal variables. Starner and Haftka [3] have also shown that a hybrid constraints mixing the direct variables and reciprocal variables can yield a more conservative approximation, which has the advantage of giving convex sub-problem.…”
Section: Introductionmentioning
confidence: 99%