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A systematic investigation of common gradient based model updating approaches applied to high-fidelity test-data of a wind turbine rotor blade

Knebusch, Johannes und Gundlach, Janto und Govers, Yves (2020) A systematic investigation of common gradient based model updating approaches applied to high-fidelity test-data of a wind turbine rotor blade. In: EURODYN 2020 - 11th International Conference on Structural Dynamics, Proceedings, Seiten 2159-2174. EASD Procedia. EURODYN 2020 - XI International Conference on Structural Dynamics, 2020-11-23 - 2020-11-26, Athens, Greece (Online). doi: 10.47964/1120.9175.19508. ISBN 978-618850720-3. ISSN 2311-9020.

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Offizielle URL: http://dx.doi.org/10.47964/1120.9175.19508

Kurzfassung

Within the context of the "SmartBlades2"-project, a wind turbine rotor blade was designed and extensively tested. The rotor-blade uses a lightweight composite structure and bend-twist coupling. The bend-twist coupling facilitates a passive load-reduction by changing the angle of attack under load. Due to a high sensor-density of 265 accelerometers in the experimental modal test of the blade, the sophisticated structural dynamics of the model are captured. Apart from the commonly measured first flapwise-, edgewise-bending and torsion mode, 35 modes up to a frequency of 60 Hz are identified. Unlike in many other wind turbine rotor blade investigations, the Finite Element (FE) model uses shell elements instead of beam elements and is directly based on production drawings. This experimental and simulative setup is particularly relevant, since a significant number of mode shapes exhibit a distinct local behavior which was in previous studies not accounted for. The differences between experimental and simulated results are minimized using computational model updating procedures. In this case-study, two formerly underrepresented aspects of the updating of large-scale FE models are examined. One is the use of different parameterizations and the other is the possibility of insufficient experimental data. The parametrizations are based on well-established criteria like error-localization and sensitivity. Moreover, the updating is performed with different (i.e. reduced) subsets of the modal data and the results are then compared to the model updating results achieved with the entire dataset. This in-depth investigation of the model updating of a composite structure allows the deduction of general guidelines in the model updating of industrial-sized FE models.

elib-URL des Eintrags:https://elib.dlr.de/139913/
Dokumentart:Konferenzbeitrag (Vortrag)
Titel:A systematic investigation of common gradient based model updating approaches applied to high-fidelity test-data of a wind turbine rotor blade
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Knebusch, JohannesJohannes.Knebusch (at) dlr.dehttps://orcid.org/0000-0001-9180-9638NICHT SPEZIFIZIERT
Gundlach, JantoJanto.Gundlach (at) dlr.dehttps://orcid.org/0000-0002-7933-4913NICHT SPEZIFIZIERT
Govers, YvesYves.Govers (at) dlr.dehttps://orcid.org/0000-0003-2236-596XNICHT SPEZIFIZIERT
Datum:November 2020
Erschienen in:EURODYN 2020 - 11th International Conference on Structural Dynamics, Proceedings
Referierte Publikation:Ja
Open Access:Ja
Gold Open Access:Nein
In SCOPUS:Ja
In ISI Web of Science:Nein
DOI:10.47964/1120.9175.19508
Seitenbereich:Seiten 2159-2174
Herausgeber:
HerausgeberInstitution und/oder E-Mail-Adresse der HerausgeberHerausgeber-ORCID-iDORCID Put Code
Papadrakakis, MNational Technical University of Athens, GreeceNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Fragiadakis, MNational Technical University of Athens, GreeceNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Papadimitriou, ConstantinosUniversity of Thessaly, GreeceNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Verlag:EASD Procedia
Name der Reihe:Dynamics of on- and off-shore wind energy structures (WES)
ISSN:2311-9020
ISBN:978-618850720-3
Status:veröffentlicht
Stichwörter:windenergy, rotorblade, high-fidelity, model updating
Veranstaltungstitel:EURODYN 2020 - XI International Conference on Structural Dynamics
Veranstaltungsort:Athens, Greece (Online)
Veranstaltungsart:internationale Konferenz
Veranstaltungsbeginn:23 November 2020
Veranstaltungsende:26 November 2020
Veranstalter :EASD - European Association for Structural Dynamics
HGF - Forschungsbereich:Energie
HGF - Programm:Erneuerbare Energie
HGF - Programmthema:Windenergie
DLR - Schwerpunkt:Energie
DLR - Forschungsgebiet:E SW - Solar- und Windenergie
DLR - Teilgebiet (Projekt, Vorhaben):E - Windenergie (alt)
Standort: Göttingen
Institute & Einrichtungen:Institut für Aeroelastik > Strukturdynamik und Systemidentifikation
Hinterlegt von: Knebusch, Johannes
Hinterlegt am:23 Dez 2020 10:26
Letzte Änderung:24 Apr 2024 20:40

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