Output-only identification of civil structures using nonlinear finite element model updating

Hamed Ebrahimian; Rodrigo Astroza; Joel P. Conte

doi:10.1117/12.2084573

Output-only identification of civil structures using nonlinear finite element model updating

Hamed Ebrahimian, Rodrigo Astroza, Joel P. Conte

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

1 Scopus citations

Abstract

This paper presents a novel approach for output-only nonlinear system identification of structures using data recorded during earthquake events. In this approach, state-of-the-art nonlinear structural FE modeling and analysis techniques are combined with Bayesian Inference method to estimate (i) time-invariant parameters governing the nonlinear hysteretic material constitutive models used in the FE model of the structure, and (ii) the time history of the earthquake ground motion. To validate the performance of the proposed framework, the simulated responses of a bridge pier to an earthquake ground motion is polluted with artificial output measurement noise and used to jointly estimate the unknown material parameters and the time history of the earthquake ground motion. This proof-of-concept example illustrates the succeßful performance of the proposed approach even in the presence of high measurement noise.

Original language	English
Title of host publication	Health Monitoring of Structural and Biological Systems 2015
Editors	Tribikram Kundu
Publisher	SPIE
ISBN (Electronic)	9781628415414
DOIs	https://doi.org/10.1117/12.2084573
State	Published - 2015
Externally published	Yes
Event	Health Monitoring of Structural and Biological Systems 2015 - San Diego, United States Duration: 9 Mar 2015 → 12 Mar 2015

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	9438
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Conference

Conference	Health Monitoring of Structural and Biological Systems 2015
Country/Territory	United States
City	San Diego
Period	9/03/15 → 12/03/15

Bibliographical note

Publisher Copyright:
© 2015 SPIE.

Keywords

Bayesian inference
Blind identification
Civil structure
Damage identification
Finite element model updating
Health monitoring
Nonlinear finite element model
Nonlinear system
Nonlinear system identification
Output only estimation

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10.1117/12.2084573

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@inproceedings{0260434f10474a438b008066047faed4,

title = "Output-only identification of civil structures using nonlinear finite element model updating",

abstract = "This paper presents a novel approach for output-only nonlinear system identification of structures using data recorded during earthquake events. In this approach, state-of-the-art nonlinear structural FE modeling and analysis techniques are combined with Bayesian Inference method to estimate (i) time-invariant parameters governing the nonlinear hysteretic material constitutive models used in the FE model of the structure, and (ii) the time history of the earthquake ground motion. To validate the performance of the proposed framework, the simulated responses of a bridge pier to an earthquake ground motion is polluted with artificial output measurement noise and used to jointly estimate the unknown material parameters and the time history of the earthquake ground motion. This proof-of-concept example illustrates the succe{\ss}ful performance of the proposed approach even in the presence of high measurement noise.",

keywords = "Bayesian inference, Blind identification, Civil structure, Damage identification, Finite element model updating, Health monitoring, Nonlinear finite element model, Nonlinear system, Nonlinear system identification, Output only estimation",

author = "Hamed Ebrahimian and Rodrigo Astroza and Conte, {Joel P.}",

note = "Publisher Copyright: {\textcopyright} 2015 SPIE.; Health Monitoring of Structural and Biological Systems 2015 ; Conference date: 09-03-2015 Through 12-03-2015",

year = "2015",

doi = "10.1117/12.2084573",

language = "English",

series = "Proceedings of SPIE - The International Society for Optical Engineering",

publisher = "SPIE",

editor = "Tribikram Kundu",

booktitle = "Health Monitoring of Structural and Biological Systems 2015",

address = "United States",

}

Ebrahimian, H, Astroza, R & Conte, JP 2015, Output-only identification of civil structures using nonlinear finite element model updating. in T Kundu (ed.), Health Monitoring of Structural and Biological Systems 2015., 943819, Proceedings of SPIE - The International Society for Optical Engineering, vol. 9438, SPIE, Health Monitoring of Structural and Biological Systems 2015, San Diego, United States, 9/03/15. https://doi.org/10.1117/12.2084573

Output-only identification of civil structures using nonlinear finite element model updating. / Ebrahimian, Hamed; Astroza, Rodrigo; Conte, Joel P.
Health Monitoring of Structural and Biological Systems 2015. ed. / Tribikram Kundu. SPIE, 2015. 943819 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9438).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Output-only identification of civil structures using nonlinear finite element model updating

AU - Ebrahimian, Hamed

AU - Astroza, Rodrigo

AU - Conte, Joel P.

PY - 2015

Y1 - 2015

N2 - This paper presents a novel approach for output-only nonlinear system identification of structures using data recorded during earthquake events. In this approach, state-of-the-art nonlinear structural FE modeling and analysis techniques are combined with Bayesian Inference method to estimate (i) time-invariant parameters governing the nonlinear hysteretic material constitutive models used in the FE model of the structure, and (ii) the time history of the earthquake ground motion. To validate the performance of the proposed framework, the simulated responses of a bridge pier to an earthquake ground motion is polluted with artificial output measurement noise and used to jointly estimate the unknown material parameters and the time history of the earthquake ground motion. This proof-of-concept example illustrates the succeßful performance of the proposed approach even in the presence of high measurement noise.

AB - This paper presents a novel approach for output-only nonlinear system identification of structures using data recorded during earthquake events. In this approach, state-of-the-art nonlinear structural FE modeling and analysis techniques are combined with Bayesian Inference method to estimate (i) time-invariant parameters governing the nonlinear hysteretic material constitutive models used in the FE model of the structure, and (ii) the time history of the earthquake ground motion. To validate the performance of the proposed framework, the simulated responses of a bridge pier to an earthquake ground motion is polluted with artificial output measurement noise and used to jointly estimate the unknown material parameters and the time history of the earthquake ground motion. This proof-of-concept example illustrates the succeßful performance of the proposed approach even in the presence of high measurement noise.

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KW - Blind identification

KW - Civil structure

KW - Damage identification

KW - Finite element model updating

KW - Health monitoring

KW - Nonlinear finite element model

KW - Nonlinear system

KW - Nonlinear system identification

KW - Output only estimation

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M3 - Conference contribution

AN - SCOPUS:84943329762

T3 - Proceedings of SPIE - The International Society for Optical Engineering

BT - Health Monitoring of Structural and Biological Systems 2015

A2 - Kundu, Tribikram

PB - SPIE

T2 - Health Monitoring of Structural and Biological Systems 2015

Y2 - 9 March 2015 through 12 March 2015

ER -

Output-only identification of civil structures using nonlinear finite element model updating

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