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Perspectives on model updating

Mottershead, John and Broggi, Mateo and Gomes, H. M. and Govers, Yves and Haddad Khodaparast, Hamad and Link, Michael and Patelli, E. and Silva, T.A.N. (2015) Perspectives on model updating. ICEDyn 2015 - International Conference on Structural Engineering Dynamics, 22.-24. Juni 2015, Lagos, Portugal.

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Abstract

Deterministic model updating is now a mature technology, widely applied to large scale industrial structures. It is concerned with the calibration of the parameters of a single model based on one set of test data. It is, of course, well known that different analysts produce different finite element (FE) models, make different physics-based assumptions, and parameterize their models differently. Also, tests carried out on the same structure, by different operatives, at different times, under different ambient conditions produce different results. There is no unique model and no unique data. Therefore, model updating needs to take account of modelling and test-data variability. Much emphasis is now placed on what has become known as stochastic model updating. In this paper two currently prominent stochastic model updating techniques (covariance updating and Bayesian model updating) are described and results are produced for a simple 3 degree of freedom mass-spring model and for the DLR AIRMOD structure.

Item URL in elib:https://elib.dlr.de/103191/
Document Type:Conference or Workshop Item (Speech)
Title:Perspectives on model updating
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Mottershead, JohnCentre for Engineering Dynamics, The University of Liverpool, United KingdomUNSPECIFIED
Broggi, MateoUNSPECIFIEDUNSPECIFIED
Gomes, H. M.UNSPECIFIEDUNSPECIFIED
Govers, Yvesyves.govers (at) dlr.deUNSPECIFIED
Haddad Khodaparast, HamadUNSPECIFIEDUNSPECIFIED
Link, MichaelUniversity of Kassel, Institute for Statics and DynamicsUNSPECIFIED
Patelli, E.UNSPECIFIEDUNSPECIFIED
Silva, T.A.N.UNSPECIFIEDUNSPECIFIED
Date:2015
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:model updating, deterministic, stochastic
Event Title:ICEDyn 2015 - International Conference on Structural Engineering Dynamics
Event Location:Lagos, Portugal
Event Type:international Conference
Event Dates:22.-24. Juni 2015
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Flight Physics
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity > Structural Dynamics and System Identification
Deposited By: Erdmann, Daniela
Deposited On:23 Feb 2016 16:27
Last Modified:14 Aug 2017 08:55

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