Reliability-based Robust Design Optimization with the Reliability Index Approach applied to composite laminate structures

• Tipo: Artigo em Revista Científica Internacional
• Data: 2019

Autores

Gonçalo das Neves Carneiro (Autor) FEUP; Carlos Conceição António (Autor) FEUP

Revista

Título: Composite Structures

Vol. 209

Páginas: 844-855

ISSN: 0263-8223

Editora: Elsevier

Indexação

ISI Web of Knowledge - 25 Citações

ISI Web of Science

Scopus - 27 Citações

Classificação Científica

CORDIS: Ciências Tecnológicas > Engenharia ; Ciências Físicas > Matemática

FOS: Ciências da engenharia e tecnologias > Engenharia mecânica ; Ciências exactas e naturais > Matemática

Outras Informações

ID Authenticus: P-00P-X1C

DOI: 10.1016/j.compstruct.2018.11.012

Abstract (EN): In this paper a new approach to the Reliability-based Robust Design Optimization (RBRDO) of angle-ply composite laminate structures is presented. The problem is defined as a bi-objective Robust Design Optimization (RDO) problem, with deterministic and probabilistic constraints. Design optimization is considered as the minimization problem of the weight (optimality) and the determinant of the variance-covariance matrix of the response functionals of the system (robustness). Reliability assessment is executed by the Reliability Index Approach (RIA), as an inner cycle. The key concept of this methodology is the exclusive use of evolutionary algorithms with elitist strategy, allowing for global convergence in the two optimization cycles. The RIA problem was reformulated and a set of new evolutionary operators were developed. A numerical example is presented and the results compared with other RBRDO and RDO formulations. Results show that deterministic and probabilistic structural integrity measures are quite sensitive to uncertainty, for multi-component composite structures.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 12