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Modal Analysis of Multi-Axis Transient Tests via Time Domain Identification.

Füllekrug, and U., (1991) Modal Analysis of Multi-Axis Transient Tests via Time Domain Identification. In: DGLR-Bericht 91-06, 91-079, pp. 204-210. Int. Forum on Aeroelasticity and Structural 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

A time domain identification method analysing forced vibrations is utisized for evaluation of a base driven transient test. A structural model of a satellite mounted onto a multi-axis vibration simulator was excited by transient base point acceleration signals typical of those occuring during launch of spacecraft. Time histories of base point accelerations and structural responses were measured. These data were preprocessed and then analysed by the identification algorithm. The theoretical basis of the method is outlined and fundamental equations are summarized. The solution of the identification equation by three different methods is described and the concept of the employed reduction transformation is explained. Data preprocessing consists of calculation of relative accelerations, digital filtering and time integration. Modal analysis using various time windows is described. Results for modal parameters are compared with those of a frequency domain modal analysis. Effects of some evaluation parameters and the type of estimation method on the quality of the results are considered.

Item URL in elib:https://elib.dlr.de/39447/
Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=1991, pages=7,
Title:Modal Analysis of Multi-Axis Transient Tests via Time Domain Identification.
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Füllekrug, UNSPECIFIEDUNSPECIFIED
U., 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:91-079
Page Range:pp. 204-210
Status:Published
Keywords:Structural Dynamics, Multi-Axis Vibration Tests, Modal Analysis, Time Domain Identification.
Event Title:Int. Forum on Aeroelasticity and Structural 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

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