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Two-level layup optimization of composite laminate using lamination parameters

Liu, Xiaoyang, Featherston, Carol A. and Kennedy, David 2019. Two-level layup optimization of composite laminate using lamination parameters. Composite Structures 211 , pp. 337-350. 10.1016/j.compstruct.2018.12.054

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Abstract

This paper provides an efficient method for performing global layup optimization of composite laminates with buckling and manufacturing constraints. The optimization problem is divided into two stages and is based on the use of lamination parameters. During the first stage, exact finite strip analysis and continuous optimum design are employed for buckling optimization of the lamination parameters and laminate thickness. In the second stage, a logic-based procedure combining the branch and bound method with a global layerwise technique is employed to find the optimal stacking sequences to match the optimized lamination parameters obtained in the first stage. In order to ensure the optimized layup can be used in practice, four manufacturing constraints are added into the logical search process, and the feasible region for the lamination parameters with a manufacturing constraint which requires at least 10% of each of four possible ply orientations is studied. By comparing the logic-based method with the use of a genetic algorithm for searching stacking sequences under different requirements, the high efficiency and ability to achieve a global optimal result of the logic-based method are demonstrated.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Engineering
Publisher: Elsevier
ISSN: 0263-8223
Date of First Compliant Deposit: 7 January 2019
Date of Acceptance: 20 December 2018
Last Modified: 28 Apr 2020 13:15
URI: http://orca.cf.ac.uk/id/eprint/118172

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