Applications of Frequency Domain Curve-fitting in the EFDD Technique

Niels-Jørgen Jacobsen, Palle Andersen, Rune Brincker

Publikation: Bidrag til bog/antologi/rapport/konference-proceedingKonferencebidrag i proceedingsForskningpeer review

Resumé

Over the years different methods have been proposed for how to deal with the presence of harmonic components in operational modal analysis. In this paper a method for detection of harmonic components using Fast Kurtosis Checking will be introduced along with a new frequency domain curve-fitting version of the Enhanced Frequency Domain Decomposition (EFDD) technique. This combined approach makes it possible to extract structural modes fast even when several harmonic components are present and even when the harmonic components are located exactly at the natural frequencies of the structural modes. The applicability of the combined approach is assessed for a case within mechanical engineering as well as a case within civil engineering.

OriginalsprogEngelsk
TitelConference Proceedings : IMAC-XXVI : A Conference & Exposition on Structural Dynamics
Antal sider13
ForlagSociety for Experimental Mechanics
Publikationsdato2008
ISBN (Elektronisk)0912053984
StatusUdgivet - 2008
Udgivet eksterntJa
BegivenhedThe International Modal Analysis Conference - Orlando, Florida, USA
Varighed: 4. feb. 20087. feb. 2008
Konferencens nummer: 26

Konference

KonferenceThe International Modal Analysis Conference
Nummer26
LandUSA
ByOrlando, Florida
Periode04/02/200807/02/2008

Fingeraftryk

Curve fitting
Mechanical engineering
Modal analysis
Civil engineering
Natural frequencies
Decomposition

Citer dette

Jacobsen, N-J., Andersen, P., & Brincker, R. (2008). Applications of Frequency Domain Curve-fitting in the EFDD Technique. I Conference Proceedings : IMAC-XXVI : A Conference & Exposition on Structural Dynamics Society for Experimental Mechanics.
Jacobsen, Niels-Jørgen ; Andersen, Palle ; Brincker, Rune. / Applications of Frequency Domain Curve-fitting in the EFDD Technique. Conference Proceedings : IMAC-XXVI : A Conference & Exposition on Structural Dynamics. Society for Experimental Mechanics, 2008.
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Jacobsen, N-J, Andersen, P & Brincker, R 2008, Applications of Frequency Domain Curve-fitting in the EFDD Technique. i Conference Proceedings : IMAC-XXVI : A Conference & Exposition on Structural Dynamics. Society for Experimental Mechanics, The International Modal Analysis Conference, Orlando, Florida, USA, 04/02/2008.

Applications of Frequency Domain Curve-fitting in the EFDD Technique. / Jacobsen, Niels-Jørgen; Andersen, Palle; Brincker, Rune.

Conference Proceedings : IMAC-XXVI : A Conference & Exposition on Structural Dynamics. Society for Experimental Mechanics, 2008.

Publikation: Bidrag til bog/antologi/rapport/konference-proceedingKonferencebidrag i proceedingsForskningpeer review

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N2 - Over the years different methods have been proposed for how to deal with the presence of harmonic components in operational modal analysis. In this paper a method for detection of harmonic components using Fast Kurtosis Checking will be introduced along with a new frequency domain curve-fitting version of the Enhanced Frequency Domain Decomposition (EFDD) technique. This combined approach makes it possible to extract structural modes fast even when several harmonic components are present and even when the harmonic components are located exactly at the natural frequencies of the structural modes. The applicability of the combined approach is assessed for a case within mechanical engineering as well as a case within civil engineering.

AB - Over the years different methods have been proposed for how to deal with the presence of harmonic components in operational modal analysis. In this paper a method for detection of harmonic components using Fast Kurtosis Checking will be introduced along with a new frequency domain curve-fitting version of the Enhanced Frequency Domain Decomposition (EFDD) technique. This combined approach makes it possible to extract structural modes fast even when several harmonic components are present and even when the harmonic components are located exactly at the natural frequencies of the structural modes. The applicability of the combined approach is assessed for a case within mechanical engineering as well as a case within civil engineering.

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PB - Society for Experimental Mechanics

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Jacobsen N-J, Andersen P, Brincker R. Applications of Frequency Domain Curve-fitting in the EFDD Technique. I Conference Proceedings : IMAC-XXVI : A Conference & Exposition on Structural Dynamics. Society for Experimental Mechanics. 2008