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Computation of Real Normal Modes from Complex Eigenvectors

Füllekrug, Ulrich (2006) Computation of Real Normal Modes from Complex Eigenvectors. ICSV13 - The Thirteenth International Congress on Sound and Vibration, 2006-07-02 - 2006-07-06, Vienna, Austria (Europe). ISBN 3-9501554-5-7

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Abstract

A method for the computation of real normal modes from complex eigenvectors is described in this paper. The method is based on the exact eigensystem equations, which commonly cannot be used due the problem of modal truncation. A solution to this problem is achieved by a reduction transformation. The theory of the method is described in detail. With the purpose to demonstrate the applicability, a simulated vibration system is employed. In addition, experimental data from modal identification tests on an aircraft are used. It can be shown that the method is able to transform identified complex eigenvectors into real normal modes with good reliability and accuracy.

Item URL in elib:https://elib.dlr.de/44244/
Document Type:Conference or Workshop Item (Speech)
Title:Computation of Real Normal Modes from Complex Eigenvectors
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Füllekrug, UlrichInstitut für AeroelastikUNSPECIFIED
Date:2006
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Editors:
EditorsEmail
Eberhardsteiner, J.UNSPECIFIED
Mang, H.A.UNSPECIFIED
Waubke, H.UNSPECIFIED
ISBN:3-9501554-5-7
Status:Published
Keywords:structural dynamics, modal identification, complex eigenvectors, real normal modes, transformation
Event Title:ICSV13 - The Thirteenth International Congress on Sound and Vibration
Event Location:Vienna, Austria (Europe)
Event Type:international Conference
Event Dates:2006-07-02 - 2006-07-06
Organizer:Vienna University of Technology
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research (old)
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Flexible Aircraft (old)
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity
Deposited By: Erdmann, Daniela
Deposited On:25 Aug 2006
Last Modified:31 Jul 2019 19:17

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