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Finding Local Non-Linearities Using Error Localization from Model Updating Theory: Proceedings of the 30th IMAC, A Conference on Structural Dynamics, 2012
Linnaeus University, Faculty of Science and Engineering, School of Engineering. (Strukturdynamik)ORCID iD: 0000-0002-4404-5708
Chalmers. (Dynamik)
2012 (English)In: Topic in Nonlinear Dynamics: Vol. 3 / [ed] D. Adams, G. Kerschen, A. Carrella, New York: Springer, 2012, 323-334 p.Chapter in book (Refereed)
Abstract [en]

Within the aerospace industry, linear finite element models are traditionally used to describe the global structural dynamics of an aircraft. Ground vibration test data serve to facilitate the validation of models which are then used to characterize the aeroelastic behavior of the aircraft and to predict the responses due to dynamic loads. Thus, it is vital that the models contain the essential dynamics of the aircraft. Observed nonlinearities are judged to be local in nature whereas the main part of the structure behaves linearly under normal loading. In this work we focus on the identification of nonlinear effects and do that based on model updating theory. That includes methods for error localization with proper selection of candidate error parameters. The nonlinearities are treated as local modeling errors not considered in the linear system model. The error localization behavior is studied using synthetic test data from a simple system, known as the ECL Benchmark, with known nonlinear properties.

Place, publisher, year, edition, pages
New York: Springer, 2012. 323-334 p.
Series
Conference Proceedings of the Society for Experimental Mechanics Series, ISSN 2191-5644 ; Vol. 28
Keyword [en]
Non linear, Error localization, Model updating, Parameter identifiability, Data informativeness, Optimization
National Category
Applied Mechanics
Research subject
Technology (byts ev till Engineering)
Identifiers
URN: urn:nbn:se:lnu:diva-16308DOI: 10.1007/978-1-4614-2416-1ISBN: 978-1-4614-2415-4 (print)ISBN: 978-1-4614-2416-1 (print)OAI: oai:DiVA.org:lnu-16308DiVA: diva2:469115
Conference
International Modal Analysis Conference
Projects
NFFP5
Available from: 2011-12-22 Created: 2011-12-22 Last updated: 2015-05-24Bibliographically approved

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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf