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Inverse parameter estimation in resonant, coupled fluid-structure interaction problems
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering. Siemens Industry Software, Interleuvenlaan 68, Leuven, B-3001, Belgium.ORCID iD: 0000-0003-4503-4151
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering.ORCID iD: 0000-0003-1855-5437
2018 (English)In: Proceedings of ISMA 2018 - International Conference on Noise and Vibration Engineering and USD 2018 - International Conference on Uncertainty in Structural Dynamics, KU Leuven - Departement Werktuigkunde , 2018, p. 2155-2169Conference paper, Published paper (Refereed)
Abstract [en]

This work discusses the estimation of model parameters in resonant coupled systems over a wide frequency range. Such problems are known to be subjected to local minima, which represent a major obstacle in the field of parameter identification. This work evaluates various approaches to finding the global minimum, i.e. the true model parameters. The L2 norm between a target and a model frequency response function is used as the objective function. The estimation is performed through deterministic and statistical inversion frameworks, using both full-spectrum and step-wise approaches. The occurrence and the background of local minima are discussed and the performance of the different solution methods is evaluated. In particular, the correlation between different model parameters is analysed and observed to control the path towards the solution. Two illustrative examples are proposed, including the estimation of geometrical and material properties of an expansion chamber coupled to a limp porous material.

Place, publisher, year, edition, pages
KU Leuven - Departement Werktuigkunde , 2018. p. 2155-2169
National Category
Control Engineering
Identifiers
URN: urn:nbn:se:kth:diva-246513Scopus ID: 2-s2.0-85060381317ISBN: 9789073802995 (print)OAI: oai:DiVA.org:kth-246513DiVA, id: diva2:1297485
Conference
28th International Conference on Noise and Vibration Engineering, ISMA 2018 and 7th International Conference on Uncertainty in Structural Dynamics, USD 2018, 17 September 2018 through 19 September 2018
Note

QC 20190320

Available from: 2019-03-20 Created: 2019-03-20 Last updated: 2019-03-20Bibliographically approved

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Cuenca, Jacques

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CiteExportLink to record
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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