Instantaneous identification of Bouc-Wen-type hysteretic systems from seismic response data

Rosario Ceravolo (1) , Giacomo Demarie (1) , Silvano Erlicher (2)

1 DISTR - Dipartimento di Ingegneria Strutturale e Geotecnica
2 navier umr 8205 - Laboratoire Navier

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.

Mots clés: hysteretic models; structural identification; instantaneous estimators; seismic response

Domaines: Traitement du signal et de l'image [eess.SP]; Mécanique des matériaux [physics.class-ph]; Mécanique des matériaux [physics.class-ph]; Traitement du signal et de l'image [eess.SP]

Rosario Ceravolo, Giacomo Demarie, Silvano Erlicher. Instantaneous identification of Bouc-Wen-type hysteretic systems from seismic response data. Key Engineering Materials, 2007, 347, pp.331-338. ⟨hal-00345311⟩