A novel parallel method for layup optimization of composite structures with ply drop-offs. (15th May 2023)

• Record Type: Journal Article
• Authors: Liu, Xiaoyang; Featherston, Carol A.; Kennedy, David
• Is Part Of: Composite structures. Volume 312(2023)
• Publication Date: 2023-05-15
• Subjects: Composite -- Layup optimization -- Lamination parameters -- Blending -- Parallel optimization; Composite construction -- Periodicals; Composites -- Périodiques; 624.18
• DOI: 10.1016/j.compstruct.2023.116853
• Languages: English
• ISSNs: 0263-8223

Abstract

Abstract: This paper presents a novel parallel optimization method for obtaining blended layups of composite laminates which closely match target lamination parameters. Firstly, a guide-based adaptive genetic algorithm (GAGA) which stochastically searches the layups is developed. Then the parallel optimization method DLBB-GAGA is developed by combining GAGA and a dummy layerwise branch and bound method (DLBB) which performs a logic-based search in a parallel computation, during which optimization information is shared between the two methods. The combination of these two different methods gives the parallel DLBB-GAGA method the advantages of both, enhancing the searching ability for the blended layup optimization. The superiority of the parallel DLBB-GAGA method is demonstrated through comparisons between the three methods, and it is concluded that the method is particularly effective for practical design where more layup design constraints are considered.