Joint time –frequency analysis in structural dynamics
Abstract
Traditional Fourier analysis has been an important tool in engineering
applications for many years. However, it does not capture readily nonstationary
and local features, which are inherently present in many structural
dynamics problems. The seminar will focus on modern time-frequency
analysis techniques for capturing localized effects and evolutionary frequency
content by using wavelets, chirplets, and signal intrinsic modes. These
techniques will be presented in context with earthquake engineering
applications and they will be used for analyzing both historic ground
accelerograms and linear/nonlinear seismic responses of benchmark
structures. However, they are applicable as well to a plethora of other
structural engineering, and civil engineering in general, themes.
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