Output-Only Nonlinear Finite Element Model Updating Using Autoregressive Process

Juan Castiglione, Rodrigo Astroza*, Saeed Eftekhar Azam, Daniel Linzell

*Autor correspondiente de este trabajo

Resultado de la investigación: Capítulo del libro/informe/acta de congresoContribución a la conferenciarevisión exhaustiva

Resumen

A novel approach to deal with nonlinear system identification of civil structures subjected to unmeasured excitations is presented. Using only sparse global dynamic structural response, mechanics-based nonlinear finite element (FE) model parameters and unmeasured inputs are estimated. Unmeasured inputs are represented by a time-varying autoregressive (TAR) model. Unknown FE model parameters and TAR model parameters are jointly estimated using an unscented Kalman filter. The proposed method is validated using numerically simulated data from a 3D steel frame subjected to seismic base excitation. Six material parameters and one component of the base excitation are considered as unknowns. Excellent input and model parameter estimations are obtained, even for low order TAR models. © 2020, The Society for Experimental Mechanics, Inc.
Idioma originalInglés
Título de la publicación alojadaModel Validation and Uncertainty Quantification, Volume 3 - Proceedings of the 38th IMAC, A Conference and Exposition on Structural Dynamics, 2020
EditoresZhu Mao
EditorialSpringer
Páginas83-86
Número de páginas4
ISBN (versión impresa)9783030487782
DOI
EstadoPublicada - 2020
Evento38th IMAC, A Conference and Exposition on Structural Dynamics, 2020 - Houston, Estados Unidos
Duración: 10 feb. 202013 feb. 2020

Serie de la publicación

NombreConference Proceedings of the Society for Experimental Mechanics Series
ISSN (versión impresa)2191-5644
ISSN (versión digital)2191-5652

Conferencia

Conferencia38th IMAC, A Conference and Exposition on Structural Dynamics, 2020
País/TerritorioEstados Unidos
CiudadHouston
Período10/02/2013/02/20

Nota bibliográfica

Publisher Copyright:
© 2020, The Society for Experimental Mechanics, Inc.

Huella

Profundice en los temas de investigación de 'Output-Only Nonlinear Finite Element Model Updating Using Autoregressive Process'. En conjunto forman una huella única.

Citar esto