Paper Title:

Instantaneous Identification of Bouc-Wen-Type Hysteretic Systems from Seismic Response Data

Periodical Key Engineering Materials (Volume 347)
Main Theme Damage Assessment of Structures VII
Edited by L. Garibaldi, C. Surace, K. Holford and W.M. Ostachowicz
Pages 331-338
DOI 10.4028/www.scientific.net/KEM.347.331
Citation Rosario Ceravolo et al., 2007, Key Engineering Materials, 347, 331
Online since September, 2007
Authors Rosario Ceravolo, Giacomo V. Demarie, Silvano Erlicher
Keywords Hysteretic Model, Instantaneous Estimators, Seismic Response, Structural Identification
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Abstract

This paper presents a technique for identification of non-linear hysteretic systems subjected to non-stationary loading. In the numerical simulations, a Bouc-Wen model was chosen for its ability to represent the properties of a wide class of real hysteretic systems. The parameters of the model are computed instantaneously by approximating the internal restoring force surface through an “ad hoc” polynomial basis. Instantaneous estimates result from time-varying spectra of the response signals. A numerical application of interest to earthquake engineering is finally reported.