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Uncertainty propagation in inverse reliability-based design of composite structures

Title
Uncertainty propagation in inverse reliability-based design of composite structures
Type
Article in International Conference Proceedings Book
Year
2009
Authors
António, Carlos Alberto da Conceição António
(Author)
FEUP
Luísa N. Hoffbauer
(Author)
FEUP
The person does not belong to the institution. The person does not belong to the institution. The person does not belong to the institution. Without AUTHENTICUS Without ORCID
Conference proceedings International
Initial page: 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
Scientific classification
FOS: Engineering and technology > Other engineering and technologies
CORDIS: Technological sciences
Other information
Authenticus ID: 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.
Language: English
Type (Professor's evaluation): Scientific
No. of pages: 18
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