elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

Comparison of two dissimilar modal Identification Techniques.

Pappa, R.S. (1) and Schenk, A. and Niedbal, N. and Klusowski, E. (1991) Comparison of two dissimilar modal Identification Techniques. In: DGLR-Bericht 91-06, 91-078, pp. 195-203. Int. Forum on Aeroelasticity and Strucural Dynamics 1991 Combined with a One-Day Workshop on Smart Material Systems and Structures, June 3-6, 1991, Eurogress Center, Aachen..

Full text not available from this repository.

Abstract

This paper discusses work performed under a collaborative research agreement between NASA and DLR in the area of Dynamics and Control of Large Space Systems. The objective is to develop improved techniques for system identification of future large spacecraft. Recent laboratory results using a refined Phase Resonance Method (PRM) and the Eigensystem Realization Algorithm (ERA) on the same test structure are reported. These methods are dissimilar modal identification techniques developed at DLR and NASA, respectively. In this application, the natural frequencies and mode shapes determined using the PRM and ERA techniques are mostlly identical within engineering accuracy. Although ERA identified 30 modes in the frequency range from 0 to 100 Hz compared with 26 modes for PRM, the additional results are weakly-observed torsional modes of the individual beams which were not sought.

Item URL in elib:https://elib.dlr.de/39455/
Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=1991, pages=9,
Title:Comparison of two dissimilar modal Identification Techniques.
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Pappa, R.S. (1)UNSPECIFIEDUNSPECIFIED
Schenk, A.UNSPECIFIEDUNSPECIFIED
Niedbal, N.UNSPECIFIEDUNSPECIFIED
Klusowski, E.UNSPECIFIEDUNSPECIFIED
Date:1991
Journal or Publication Title:DGLR-Bericht 91-06
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:91-078
Page Range:pp. 195-203
Status:Published
Keywords:Modal Identification, Ground Vibration Testing, Large Space Structures, Phase Resonance Method (PRM), Eigensystem Realization Algorithm (ERA).
Event Title:Int. Forum on Aeroelasticity and Strucural Dynamics 1991 Combined with a One-Day Workshop on Smart Material Systems and Structures, June 3-6, 1991, Eurogress Center, Aachen.
HGF - Research field:UNSPECIFIED
HGF - Program:other
HGF - Program Themes:other
DLR - Research area:UNSPECIFIED
DLR - Program:no assignment
DLR - Research theme (Project):UNSPECIFIED
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity
Deposited By: DLR-Beauftragter, elib
Deposited On:02 Apr 2006
Last Modified:27 Apr 2009 10:43

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Copyright © 2008-2017 German Aerospace Center (DLR). All rights reserved.