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M.D. Spiridonakos, E.N. Chatzi, "Metamodelling of Uncertain Structural Systems based on Wavelet Transform Decomposition", in Y. Tsompanakis, (Editor), "Proceedings of the Third International Conference on Soft Computing Technology in Civil, Structural and Environmental Engineering", Civil-Comp Press, Stirlingshire, UK, Paper 25, 2013. doi:10.4203/ccp.103.25

Keywords: metamodelling, uncertainty, dynamic response, polynomial chaos basis, .

Summary

The problem of estimating reduced complexity metamodels for the accurate representation of computationally costly numerical models with uncertain input parameters is addressed in this paper. The introduced metamodelling method is based on the discrete wavelet transform of the dynamic response signals. The coefficients of this transform are defined as random parameters in order to be able to describe the uncertainty propagation. These random coefficients are expanded onto a polynomial chaos functional subspace and thus the resulting representation is fully described through a number of deterministic projection coefficients. The effectiveness of the proposed method is illustrated through its application to the metamodelling of a five-storey two-bay frame model paradigm. The results demonstrate the efficiency of the proposed methodology for accurate simulation of the finite element model dynamics.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 103 PROCEEDINGS OF THE THIRD INTERNATIONAL CONFERENCE ON SOFT COMPUTING TECHNOLOGY IN CIVIL, STRUCTURAL AND ENVIRONMENTAL ENGINEERING Edited by: Y. Tsompanakis Paper 25 Metamodelling of Uncertain Structural Systems based on Wavelet Transform Decomposition M.D. Spiridonakos and E.N. Chatzi Department of Civil, Environmental and Geomatic Engineering Institute of Structural Engineering, ETH Zurich, Switzerland doi:10.4203/ccp.103.25 purchase the full-text of this paper Full Bibliographic Reference for this paper M.D. Spiridonakos, E.N. Chatzi, "Metamodelling of Uncertain Structural Systems based on Wavelet Transform Decomposition", in Y. Tsompanakis, (Editor), "Proceedings of the Third International Conference on Soft Computing Technology in Civil, Structural and Environmental Engineering", Civil-Comp Press, Stirlingshire, UK, Paper 25, 2013. doi:10.4203/ccp.103.25 Keywords: metamodelling, uncertainty, dynamic response, polynomial chaos basis, . Summary The problem of estimating reduced complexity metamodels for the accurate representation of computationally costly numerical models with uncertain input parameters is addressed in this paper. The introduced metamodelling method is based on the discrete wavelet transform of the dynamic response signals. The coefficients of this transform are defined as random parameters in order to be able to describe the uncertainty propagation. These random coefficients are expanded onto a polynomial chaos functional subspace and thus the resulting representation is fully described through a number of deterministic projection coefficients. The effectiveness of the proposed method is illustrated through its application to the metamodelling of a five-storey two-bay frame model paradigm. The results demonstrate the efficiency of the proposed methodology for accurate simulation of the finite element model dynamics. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £42 +P&P)
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