Finite-element model updating using experimental test data: parametrization and regularization

MI Friswell, JE Mottershead, A Hamid

Research output: Contribution to journalArticle (Academic Journal)peer-review

152 Citations (Scopus)

Abstract

Two critical issues in model updating are deciding how a finite element model should be parameterised and estimating the unknown parameters from the resulting ill-conditioned equations. A lack of understanding of these issues will lead to updated models without physical meaning. This paper outlines the authors' approach to parameterisation, using physical, geometric and generic element parameters. It also applies useful methods of regularisation, namely parameter constraints, the singular value decomposition, 'L' curves and cross validation to model updating.
Translated title of the contributionFinite-element model updating using experimental test data: parametrization and regularization
Original languageEnglish
Pages (from-to)169 - 186
Number of pages18
JournalPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
Volume359 (1778)
DOIs
Publication statusPublished - Jan 2001

Bibliographical note

Publisher: The Royal Society

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