Damping identification sensitivity in flutter speed estimation

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dc.contributor.authorDessena, Gabriele
dc.contributor.authorPontillo, Alessandro
dc.contributor.authorCivera, Marco
dc.contributor.authorIgnatyev, Dmitry I.
dc.contributor.authorWhidborne, James F.
dc.contributor.authorZanotti Fragonara, Luca
dc.date.accessioned2025-06-06T09:46:03Z
dc.date.available2025-06-06T09:46:03Z
dc.date.freetoread2025-06-06
dc.date.issued2025-06-01
dc.date.pubOnline2025-05-16
dc.descriptionData supporting this study (𝑝−𝑘 method MATLAB implementation) are openly available from the Zenodo Repository at https://doi.org/10.5281/zenodo.15176140. Furthermore, this study used existing authors’ data made available under licence at https://doi.org/10.5281/zenodo.11635814 and derived from the following resource available in the public domain: [11].
dc.description.abstractPredicting flutter remains a key challenge in aeroelastic research, with certain models relying on modal parameters, such as natural frequencies and damping ratios. These models are particularly useful in early design stages or for the development of small Unmanned Aerial Vehicles (maximum take-off mass below 7 kg). This study evaluates two frequency-domain system identification methods, Fast Relaxed Vector Fitting (FRVF) and the Loewner Framework (LF), for predicting the flutter onset speed of a flexible wing model. Both methods are applied to extract modal parameters from Ground Vibration Testing data, which are subsequently used to develop a reduced-order model with two degrees of freedom. The results indicate that FRVF- and LF-informed models provide reliable flutter speed, with predictions deviating by no more than 3% (FRVF) and 5% (LF) from the N4SID-informed benchmark. The findings highlight the sensitivity of flutter speed predictions to damping ratio identification accuracy and demonstrate the potential of these methods as computationally efficient alternatives for preliminary aeroelastic assessments.
dc.description.journalNameVibration
dc.description.sponsorshipEngineering and Physical Sciences Research Council (EPSRC)
dc.description.sponsorshipThe authors from Cranfield University disclosed receipt of the following financial support for the research, authorship, and/or publication of this article. This work was supported by the Engineering and Physical Sciences Research Council (EPSRC) [grant number 2277626]. The third author is supported by the Centro Nazionale per la Mobilità Sostenibile (MOST–Sustainable Mobility Center), Spoke 7 (Cooperative Connected and Automated Mobility and Smart Infrastructures), Work Package 4 (Resilience of Networks, Structural Health Monitoring and Asset Management).
dc.identifier.citationDessena G, Pontillo A, Civera M, et al., (2025) Damping identification sensitivity in flutter speed estimation. Vibration, Volume 8, Issue 2, June 2025, Article number 24en_UK
dc.identifier.eissn2571-631X
dc.identifier.elementsID673337
dc.identifier.issn2571-631X
dc.identifier.issueNo2
dc.identifier.paperNo24
dc.identifier.urihttps://doi.org/10.3390/vibration8020024
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/23992
dc.identifier.volumeNo8
dc.languageEnglish
dc.language.isoen
dc.publisherMDPI en_UK
dc.publisher.urihttps://www.mdpi.com/2571-631X/8/2
dc.relation.isreferencedbyhttps://doi.org/10.5281/zenodo.15176140
dc.relation.isreferencedbyhttps://doi.org/10.5281/zenodo.11635814
dc.rightsAttribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subject40 Engineeringen_UK
dc.subject4001 Aerospace Engineeringen_UK
dc.subject4017 Mechanical engineeringen_UK
dc.subject4901 Applied mathematicsen_UK
dc.subjectLoewner Frameworken_UK
dc.subjectFast Relaxed Vector Fittingen_UK
dc.subjectModal Analysisen_UK
dc.subjectGround Vibration Testingen_UK
dc.subjectAeroelasticityen_UK
dc.subjectDampingen_UK
dc.subjectFlutteren_UK
dc.subjectReduced Order Modelen_UK
dc.subjectAeronautical Structuresen_UK
dc.subjectSystem Identificationen_UK
dc.titleDamping identification sensitivity in flutter speed estimationen_UK
dc.typeArticle
dcterms.dateAccepted2025-05-14

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