Journal ArticleDOI
The Stacking Sequence Optimization of Stiffened Laminated Curved Panels with Different Loading and Stiffener Spacing
Cheol Kim,In-Se Yoon +1 more
TLDR
In this paper, an efficient procedure to obtain the optimal stacking sequence and the minimum weight of stiffened laminated composite curved panels under several loading conditions and stiffener layouts has been developed based on the finite element method and the genetic algorithm that is powerful for the problem with integer variables.Abstract:
An efficient procedure to obtain the optimal stacking sequence and the minimum weight of stiffened laminated composite curved panels under several loading conditions and stiffener layouts has been developed based on the finite element method and the genetic algorithm that is powerful for the problem with integer variables. Often, designing composite laminates ends up with a stacking sequence optimization that may be formulated as an integer programming problem. This procedure is applied for a problem to find the stacking sequence having a maximum critical buckling load factor and the minimum weight. The object function in this case is the weight of a stiffened laminated composite shell. Three different types of stiffener layouts with different loading conditions are investigated to see how these parameters influence on the stacking sequence optimization of the panel and the stiffeners. It is noticed from the results that the optimal stacking sequence and lay-up angles vary depending on the types of loading and stiffener spacing.read more
Citations
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Journal ArticleDOI
A review on optimization of composite structures Part I: Laminated composites
TL;DR: In this paper, the authors reviewed most of the studies carried out from 2000 on optimizing composite structures by representing a classification based on the type of structures and highlighted important parameters of these optimization approaches namely objective functions, design variables, constraints and the applied algorithms.
Journal ArticleDOI
Optimum Design of Composite Structures: A Literature Survey (1969-2009)
TL;DR: In this paper, a review of the literature on the optimization of composites is presented, which is classified according to the type of the composite structure optimized in those studies, the loading conditions, the objective function, the structural analysis method, the design variables, the constraints, the failure criteria, and the search algorithm used by the researchers.
Journal ArticleDOI
Investigation on a multispar composite wing
D.G. Stamatelos,G.N. Labeas +1 more
TL;DR: In this article, the potential advantages of an airliner composite wing are investigated by considering a multispar configuration, and a detailed comparison between optimized designs of conventional (2-spar) and three alternative wing configurations, which comprise 4-, 5-, and 6-spars for the wing construction is performed.
Journal ArticleDOI
Towards the Design of a Multispar Composite Wing
TL;DR: The preliminary design methodology of an airliner main composite wing, which has an innovative multispar configuration instead of the conventional two-spar design, is investigated and it arises from the comparison between the conventional and the 4-Spar wing arrangement, that under certain conditions the mult ispar configuration has significant advantages over the conventional design.
Journal ArticleDOI
Dynamic response of curvilinearly stiffened plates under thermal environment
TL;DR: In this paper, an improved finite element modeling method is developed for isotropic curvilinearly stiffened plates under a thermal environment, which avoids the difficulty of node overlap, which is suitable for plates with different thicknesses.
References
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Journal ArticleDOI
Optimization of laminate stacking sequence for buckling load maximization by genetic algorithm
TL;DR: In this paper, the use of a genetic algorithm to optimize the stacking sequence of a composite laminate for buckling load maximization is studied, and the advantage of the genetic algorithm in producing several near-optimal designs is discussed.
Book
Design and optimization of laminated composite materials
TL;DR: In-Plane Stiffness Design. Failure Criteria for Laminated Composites as discussed by the authors, failure criteria for laminate composites, and strength design of laminate materials.
Journal ArticleDOI
Improved Genetic Algorithm for the Design of Stiffened Composite Panels
S. Nagendra,S. Nagendra,D. Jestin,D. Jestin,Zafer Gürdal,Zafer Gürdal,R. T. Haftka,Layne T. Watson +7 more
TL;DR: The present paper suggests several changes to the basic genetic algorithm developed previously, and demonstrates reduced computational cost and increased reliability of the algorithm due to these changes.
Journal ArticleDOI
Composite laminate design optimization by genetic algorithm with generalized elitist selection
TL;DR: Several generalized elitist procedures for the design of composite laminates are explored and it is shown that GES procedures are superior to an SI procedure for two types of problems.
Journal ArticleDOI
Permutation genetic algorithm for stacking sequence design of composite laminates
TL;DR: In this article, a new permutation GA named gene-rank GA was developed and compared with an existing Partially Mapped Permutation GA, originally developed for solving the traveling salesman problem.
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