structural damping identification using analytic wavelet transformation
By applying the Analytic Wavelet Transform (AWT) based on Gabor wavelet function in conjunction with the well-known Random Decrement Technique (RDT), this paper analyzes the time-frequency resolution of Gabor wavelet and the process of identifying structural damping parameters. The method selecting the parameters of Gabor wavelet function and the formula determining the usable length of signal are thus proposed. Eventually, the efficiency of the present method is confirmed by applying it to a numerical simulation data of a three degree-of-freedom (3DOF) structure with the closely natural frequencies and to ambient vibration measurements of a super high-rise building excited by wind.
analytic wavelet transform (awt) random decrement technique (rdt) super high-rise building