Swarm intelligence hybridized with genetic search in multi-objective design optimization under constrained-Pareto dominance

• Tipo: Artigo em Revista Científica Internacional
• Data: 2023

Autores

Fitas, R (Autor) Outra; Carneiro, GD (Autor) Outra; Carlos Alberto Conceição António (Autor) FEUP

Revista

Título: Composite Structures

Vol. 319

ISSN: 0263-8223

Editora: Elsevier

Indexação

ISI Web of Knowledge - 1 Citação

Scopus - 0 Citações

Outras Informações

ID Authenticus: P-00Y-GC6

DOI: 10.1016/j.compstruct.2023.117155

Abstract (EN): The inclusion of uncertainty in structural design optimization led to more complex design optimization formulations, where uncertainty quantification has significant influence on solution methods and computing times. Designs maintaining steady levels of performance, under uncertainty, are called robust and the combination of both robustness and performance optimality leads to a methodology called Robust Design Optimization (RDO). In this work a new approach to the RDO of angle-ply composite laminate structures is proposed. The key concept of this methodology is the hybridization between the principles of Particle Swarm Optimization and Genetic Algorithms, through the evolution of multiple populations based on local and global constrain-dominance. The RDO problem is here defined as the bi-objective minimization of the structural weight (optimality) and the determinant of the variance-covariance matrix (robustness) of the system's response functionals, subject to stress and displacement constraints. A numerical structural design problem, representing a composite laminate engine hood shell, shows the capabilities of the proposed approach. Results display the good convergence properties of the proposed hybridizations both in the search and objective spaces.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 15