000010159 001__ 10159
000010159 005__ 20141205154148.0
000010159 04107 $$aeng
000010159 046__ $$k2008-10-12
000010159 100__ $$aHamtaei, Mohammadreza
000010159 24500 $$aEstimation of Modal Parameters of Buildings by Wavelet Transform

000010159 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000010159 260__ $$b
000010159 506__ $$arestricted
000010159 520__ $$2eng$$aIn this paper, determination of structural dynamic characteristics by wavelet transform (WT), which is capable of yielding time-frequency representation of structural response, is employed. In this application of WT, to achieve optima simultaneous localization in time and frequency domains the shape of mother wavelet has been controlled. For this, modified Morlet wavelet, having two free parameters, was used. The optimum values of these two parameters were obtained by employing an optimization technique which minimizes the entropy of the continuous wavelet transform, while varying these parameters simultaneously. The effectiveness of this algorithm in determination of modal parameters of buildings, especially those having close modal frequencies, was investigated and results is presented in this paper. Moreover the results of WT have been compared with those of AVS and NExT-ERA techniques, especially with regard to the number of identified modes.

000010159 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000010159 653__ $$amodal analysis, wavelet transform, ambient vibration, time-frequency representation

000010159 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000010159 720__ $$aHamtaei, Mohammadreza$$iAnvar, Seyyed-Ahmad
000010159 8560_ $$ffischerc@itam.cas.cz
000010159 8564_ $$s393017$$uhttps://invenio.itam.cas.cz/record/10159/files/05-01-0450.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 05-01-0450.
000010159 962__ $$r9324
000010159 980__ $$aPAPER