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Parametric Updating of Finite Element Models by Minimizing Response Residuals at Resonances

Göge, D. and Link, M. (2001) Parametric Updating of Finite Element Models by Minimizing Response Residuals at Resonances. In: Proceedings of the Conference, pp. 419-430. International Conference on Structural System Identification, Kassel/Germany, 5-7 September 2001. ISBN ISBN 3-89792-055-7

Full text not available from this repository.

Abstract

In this paper a two step Computational Model Updating method is investigated. In the first step, physical mass and stiffness parameters are updated. In the second step, the modal damping parameters as well as physical damping parameters (allowing to update global non-proportional damping) are open for updating. The updating techniques are based on the inverse sensitivity approach and use frequency response data only at the resonance peaks. The optimization process is solved by minimizing an objective function containing two residuals. The first represents the differences between the analytical and the experimental resonance peaks utilizing the fact, that the analytical and the experimental FRF peaks occur at different resonace frequencies. The decision on what test/analysis FRF peak differences to include in the objective function is based on the Frequency Domain Assurance Criterion (FDAC). The resonances must not necessarily be identical with the eigenfrequencies since they are determined by more or less rough estimates of the eigenfrequencies using a mode indicator function.

Item URL in elib:https://elib.dlr.de/14280/
Document Type:Conference or Workshop Item (Speech)
Additional Information: LIDO-Berichtsjahr=2001,
Title:Parametric Updating of Finite Element Models by Minimizing Response Residuals at Resonances
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Göge, D.UNSPECIFIEDUNSPECIFIED
Link, M.UNSPECIFIEDUNSPECIFIED
Date:2001
Journal or Publication Title:Proceedings of the Conference
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:pp. 419-430
ISBN:ISBN 3-89792-055-7
Status:Published
Keywords:Computational Model Updating, inverse sensitivity approach, physical and modal parameters, updating using frequency response data at resonance peaks, GARTEUR structure
Event Title:International Conference on Structural System Identification, Kassel/Germany, 5-7 September 2001
HGF - Research field:other
HGF - Program:other
HGF - Program Themes:other
DLR - Research area:no assignment
DLR - Program:no assignment
DLR - Research theme (Project):UNSPECIFIED
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity
Deposited By: Erdmann, Daniela
Deposited On:16 Sep 2005
Last Modified:14 Jan 2010 21:39

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