Uncertainty propagation in inverse reliability-based design of composite structures

• Tipo: Artigo em Livro de Atas de Conferência Internacional
• Data: 2009

Autores

António, Carlos Alberto da Conceição António (Autor) FEUP; Luísa N. Hoffbauer (Autor) FEUP

Ata de Conferência Internacional

Título: IRF’2009 – Integrity - Reliability - Failure Challenges and Opportunities

Página Inicial: 173

IRF’2009 – Integrity - Reliability - Failure Challenges and Opportunities, Third International Conference ISBN: 978-972-8826-22-2 (Book) - 978-972-8826-21-5 (CD)

Faculty of Engineering, University of Porto, Porto, Portugal, July 20-24, 2009

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Outras ciências da engenharia e tecnologias

CORDIS: Ciências Tecnológicas

Outras Informações

ID Authenticus: P-011-4J6

Abstract (EN): Analysis of uncertainty propagation in Reliability-Based Design Optimization (RBDO) of composite laminate structures is presented. Using the Uniform Design Method (UDM) a set of design points is generated over a domain centred on the mean values of the random variables aiming to study the space variability. An approach based on optimal design of composite structures to achieve a specified reliability level is proposed and the corresponding maximum load is outlined as a function of ply angle. Using the generated UDM design points as input/output patterns an Artificial Neural Networks (ANN) is developed. The developed ANN and a Monte Carlo procedure are used to analyse the variance of structural reliability index and their relative sensitivities as a function of ply angle. Numerical examples showing the utility of the approach applied to angle-ply laminates are presented.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 18