Optimization of composite plates for buckling by simulated annealing

Lombardi, Marco; Haftka, Raphael T.; Cinquini, Carlo

doi:10.2514/6.1992-2313

Cited by 13 publications

(4 citation statements)

References 2 publications

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“…An optimization procedure, based on a simulated annealing technique, is used to solve the transformed problem. This technique has been shown to be effective for optimization of a variety of engineering applications [3,4,7,16].…”

Section: Jomentioning

confidence: 99%

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A coupled controls/structures optimization procedure for the design of rotating composite box beams with piezoelectric actuators

Chattopadhyay¹,

Seeley²

1995

Smart Mater. Struct.

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An optimization procedure is developed for controlslstructures interaction using a multiobjective formulation. A rotating composite cantilever box beam model is presented which includes piezoelectric strain actuators for vibration control. The model is implemented using the finite-element method. Multiple design objectives are efficiently combined using the Kreisselmeier-Steinhauser function approach. Actuator locations and ply stacking sequences are represented by discrete (0,l) variables while structuraVcontrol parameters such as box beam dimensions are continuous design variables. A transformation technique is used to formulate the combined continuoustdiscrete problem as a purely discrete problem. This allows both optimal actuator locations and structurallcontrol parameters to be determined inside a closed loop procedure. A technique based on simulated annealing is used for optimization in conjunction with an approximate analysis procedure to reduce computational effort. Nomenclature

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Section: Jomentioning

confidence: 99%

“…Single-discipline-based optimization procedures have of actuator locations using discrete algorithms has been studied by Onoda and Hanawa [3]. The structural optimization of composite plates using simulated annealing has been investigated by Lombardi et al [4].…”

mentioning

confidence: 99%

A coupled controls/structures optimization procedure for the design of rotating composite box beams with piezoelectric actuators

Chattopadhyay¹,

Seeley²

1995

Smart Mater. Struct.

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“…Other contributions to the field of buckling and postbuckling of panels include works by Weaver and his colleagues [5][6][7], Hilburger, et al [8], Baruch and Singer [9], the creators of the STAGS general purpose program, Almroth, Rankin, Brogan, and Riks [10][11][12], Arbocz and his colleagues [13][14][15], Stein [16], Leissa [17], Arnold and Parekh [18], Starnes, Knight, and Rouse [19], Spier [20,21], Khot and Bauld [22,23], Zhang and Matthews [24], Gurdal and his colleagues [25][26][27][28][29][30], Haftka and his colleagues [30][31][32], Librescu and his colleagues [33][34][35], Sridharan and his colleagues [36,37], Myers and Hyer [38], Nemeth [39], and Noor, Starnes, and Peters [40], to identify but a few in a vast literature.…”

Section: Introductionmentioning

confidence: 99%

Optimum Design of Stiffened Panels With Substiffeners

Bushnell¹,

Rankin²

2005

46th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference

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The capability of the computer program PANDA2 to generate minimum-weight designs of stiffened panels and cylindrical shells is enhanced to permit the adding of substiffeners with rectangular cross sections between adjacent major stringers and rings. As a result many new buckling margins exist that govern buckling over various domains and subdomains of the doubly stiffened panel or shell. These generally influence the evolution of the design during optimization cycles. The substiffeners may be stringers and/or rings or may form an isogrid pattern. The effects of local, interring , and general buckling modal imperfections can be accounted for during optimization. Perfect and imperfect cylindrical shells with external T-shaped stringers and T-shaped rings and with and without substringers and subrings and under combined axial compression, external pressure, and in-plane shear are optimized by multiple executions of a "global" optimizer called SUPEROPT. It is found that from the point of view of minimum weight there is little advantage of adding substiffeners. However, with substiffeners present the major stringers and rings are spaced farther apart at the optimum design than is so when there are no substiffeners. The weight of a cylindrical shell with substiffeners is much less sensitive to the spacing of the major T-shaped stringers than is the case for a cylindrical shell without substiffeners. The optimum designs obtained by PANDA2 are evaluated by comparisons with buckling loads obtained from a general-purpose finite element program called STAGS. Predictions from STAGS agree well with those from PANDA2.

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“…After Genetic Algorithms, simulated annealing (SA) is the second most popular method for the optimization of piling sequence in laminated composite materials [59][60][61][62].…”

Section: Simulated Annealingmentioning

confidence: 99%

Memetic Computing Applied to the Design of Composite Materials and Structures

Peláez

Gómez-Ruiz

Veintimilla

et al. 2017

Mathematical Problems in Engineering

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Presently, there exists an important need for lighter and more resistant structures, with reduced manufacturing costs. Laminated polymers are materials which respond to these new demands. Main difficulties of the design process of a composite laminate include the necessity to design both the geometry of the element and the material configuration itself and, therefore, the possibilities of creating composite materials are almost unlimited. Many techniques, ranging from linear programming or finite elements to computational intelligence, have been used to solve this type of problems. The aim of this work is to show that more effective and dynamic methods to solve this type of problems are obtained by using certain techniques based on systematic exploitation of knowledge of the problem, together with the combination of metaheuristics based on population as well as on local search. With this objective, a memetic algorithm has been designed and compared with the main heuristics used in the design of laminated polymers in different scenarios. All solutions obtained have been validated by the ANSYS5 software package.

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Optimization of composite plates for buckling by simulated annealing

Cited by 13 publications

References 2 publications

A coupled controls/structures optimization procedure for the design of rotating composite box beams with piezoelectric actuators

A coupled controls/structures optimization procedure for the design of rotating composite box beams with piezoelectric actuators

Optimum Design of Stiffened Panels With Substiffeners

Memetic Computing Applied to the Design of Composite Materials and Structures

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