FDE index for goodness-of-fit between measured and calculated response signals / Dragovich, Jeff J. in Earthquake engineering structural dynamics, Vol. 38 N° 15 (Décembre 2009)  

Public ISBD [article]  inEarthquake engineering structural dynamics > Vol. 38 N° 15 (Décembre 2009) . - pp.1751-1758 Titre : FDE index for goodness-of-fit between measured and calculated response signals Type de document : texte imprimé Auteurs : Dragovich, Jeff J., Auteur ; Lepage, Andres, Auteur Article en page(s) : pp.1751-1758 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Model validation  Comparison metrics  FFT Index. décimale : 624.1 Infrastructures.Ouvrages en terre. Fondations. Tunnels Résumé : A method is presented for determining the goodness-of-fit between measured and calculated structural response signals. The method is termed as the frequency domain error (FDE) index, which is a value between 0 and 1 where zero indicates a perfect correlation. The FDE is calculated from the Fourier spectra of the measured and calculated waveforms, using a relatively simple calculation procedure, readily implemented using standard fast Fourier transform (FFT) libraries. The FDE is demonstrated herein using three different types of problems: simple harmonic waves, a large number of earthquake response simulations, and a set of limited simulations. Along with the FDE concept, effective methods for displaying the results are presented. ISSN : 0098-8847 En ligne : www.interscience.wiley.com/journal/eqe [article] FDE index for goodness-of-fit between measured and calculated response signals [texte imprimé] / Dragovich, Jeff J., Auteur ; Lepage, Andres, Auteur . - pp.1751-1758. Génie Civil Langues : Anglais (eng) in Earthquake engineering structural dynamics > Vol. 38 N° 15 (Décembre 2009) . - pp.1751-1758 Mots-clés : Model validation  Comparison metrics  FFT Index. décimale : 624.1 Infrastructures.Ouvrages en terre. Fondations. Tunnels Résumé : A method is presented for determining the goodness-of-fit between measured and calculated structural response signals. The method is termed as the frequency domain error (FDE) index, which is a value between 0 and 1 where zero indicates a perfect correlation. The FDE is calculated from the Fourier spectra of the measured and calculated waveforms, using a relatively simple calculation procedure, readily implemented using standard fast Fourier transform (FFT) libraries. The FDE is demonstrated herein using three different types of problems: simple harmonic waves, a large number of earthquake response simulations, and a set of limited simulations. Along with the FDE concept, effective methods for displaying the results are presented. ISSN : 0098-8847 En ligne : www.interscience.wiley.com/journal/eqe

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