Fundamental Frequency Optimization of Laminated Cylindrical Panels by Elitist-Genetic Algorithm

Mohammad Homayoun Sadr-Lahidjani; Hadi Ghashochi Bargh

doi:10.4028/www.scientific.net/KEM.471-472.337

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 471-472Fundamental Frequency Optimization of Laminated...

Fundamental Frequency Optimization of Laminated Cylindrical Panels by Elitist-Genetic Algorithm

Abstract:

In this paper, fundamental frequency optimization of symmetrically laminated cylindrical panels is investigated by the Elitist-Genetic algorithm (E-GA). The number of layers, the fiber orientation angles, edge conditions, length/width (a/b) and length/R (a/R) ratios are considered as design variables. The classical shallow shell theory (Donnell’s formulation) is applied to calculate the natural frequencies of laminated cylindrical curved panels. To improve the speed of the optimization process, the elitist strategy is used in the Genetic algorithm and the fitness function is computed with a semi-analytical finite strip method (FSM). A program based on Maple is used for this purpose. To check the validity, the obtained results are also compared with some other stacking sequences.

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Periodical:

Key Engineering Materials (Volumes 471-472)

Pages:

337-342

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.471-472.337

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Online since:

February 2011

Authors:

Mohammad Homayoun Sadr-Lahidjani, Hadi Ghashochi Bargh

Keywords:

Cylindrical Panel, Elitist-Genetic Algorithm, Finite Strip, Optimization

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