Memeplex-based memetic algorithm for the multi-objective optimal design of composite structures

• Tipo: Artigo em Revista Científica Internacional
• Data: 2024

Autores

Carlos Alberto Conceição António (Autor) FEUP

Revista

Título: Composite Structures

Vol. 329

ISSN: 0263-8223

Editora: Elsevier

Indexação

ISI Web of Knowledge - 0 Citações

Outras Informações

ID Authenticus: P-00Z-W5X

DOI: 10.1016/j.compstruct.2023.117789

Abstract (EN): Hybrid construction is proposed to decrease costs in lightweight structures using fiber-reinforced plastics (FRP) composite materials. Minimum weight, minimum strain energy (stiffness), and minimum energy variability of the structural system response are the objectives of the robust design optimization approach applied to composite shell structures with stiffeners. The trade-off depends on given stress, displacement, and buckling constraints imposed on composite structures considering non-linear geometric behavior. The design variables are ply angles and ply thicknesses of shell laminates, the cross-section dimensions of stiffeners, and the variables related to the selection of materials and their distribution at the laminate level and subsequently of the laminates along the structure. A Multi-Objective Memetic Algorithm (MOMA) applies multiple learning procedures exploring the synergy of different cultural transmission rules. An enlarged virtual population with a dual age-dominance nature captures and updates the Pareto curve. The concept of memeplex controls the meme selection and their propagation along the hybrid genetic and cultural evolution path. The success of memetic learning procedures is analyzed by measuring each meme's relative and absolute success events according to different approaches, depending on the reference time used in evolutionary history. Results show that MOMA is promising in multiobjective optimization of composite hybrid structures.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 19