Applying time-frequency analysis on earthquake inputs and structure responses

Chiung-Shiann Huang, Liane Jye Chen, Wei Chih Su, Shing Di Wang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This work presents the use of a short time Fourier transform to identify the modal parameters (such as natural frequencies, damping ratios and mode shapes) of a structure from its earthquake responses data. The short time Fourier transform is applied to the measured acceleration responses of a structural system, and to reconstruct the autoregressive with exogenous input (ARX) model in time-frequency domain. The accuracy of this procedure is numerically confirmed, the effects of the remove frequency band and noise on the ability to accurately estimate the dynamic characteristics are also investigated.

Original languageEnglish
Title of host publicationProceedings - 2014 International Symposium on Computer, Consumer and Control, IS3C 2014
PublisherIEEE Computer Society
Pages1245-1248
Number of pages4
ISBN (Print)9781479952779
DOIs
StatePublished - 1 Jan 2014
Event2nd International Symposium on Computer, Consumer and Control, IS3C 2014 - Taichung, Taiwan
Duration: 10 Jun 201412 Jun 2014

Publication series

NameProceedings - 2014 International Symposium on Computer, Consumer and Control, IS3C 2014

Conference

Conference2nd International Symposium on Computer, Consumer and Control, IS3C 2014
CountryTaiwan
CityTaichung
Period10/06/1412/06/14

Keywords

  • ARX
  • modal parameters
  • short time Fourier transform

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