A variability study on the response of composite structures based on sensitivity indices

• Type: Article in International Conference Proceedings Book
• Date: 2012

Authors

C. A. C. António (Author) FEUP; L. N. Hoffbauer (Author) Other

Conference proceedings International

Title: Civil-Comp Proceedings

Pages: 1-19

11th International Conference on Computational Structures Technology, CST 2012

Dubrovnik, 4 September 2012 through 7 September 2012

Indexing

ISI Proceedings

ISI Web of Knowledge

Scopus - 0 Citations

Scientific classification

FOS: Engineering and technology

CORDIS: Technological sciences

Other information

Authenticus ID: P-009-5PZ

Abstract (EN): The problem of uncertainty propagation in composite laminate structures is studied. An approach based on the optimal design of composite structures to achieve a target reliability level is proposed. Using the uniform design method (UDM), a set of design points is generated over a domain centred at mean values of random variables, aimed at studying the space variability. The most critical Tsai number, the structural reliability index and the sensitivities are obtained for each UDM design point, using the maximum load. Using the UDM design points as input/output patterns, an artificial neural network (ANN) is developed based on supervised evolutionary learning. Finally, using the developed ANN-based Monte Carlo simulation procedure, the variability of the structural response based on global sensitivity indices is evaluated. The most important sources of uncertainty are identified. © Civil-Comp Press, 2012.

Language: English

Type (Professor's evaluation): Scientific

Notes: Livro de resumos: paper 213; CD-ROM: 19 páginas

No. of pages: 19