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Measurement and Evaluation of Interface Forces During Base-Driven Tests.

Füllekrug, U. and Gschwilm, J. and Sinapius, M. (1996) Measurement and Evaluation of Interface Forces During Base-Driven Tests. In: Proc.Conference on Spacecraft Structures, Materials and Mechanical Testing, ESA SP-386, 1996, pp. 897-904. Conference on Spacecraft Structures, Materials and Mechanical Testing, Noordwijk, The Netherlands, 27-29 March, 1996..

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Abstract

This paper first summarises analytical equations which govern the dynamic behaviour of elastomechanical structures under base excitation. Special attention is focused on the dynamics at the interface between the vibration table and test structure. The dynamic relations at the interface are explained with particular consideration to the interface forces. An example of an interface forcing function is shown and discussed. A suitable device for force measurements (FMD) is described. It was specifically designed for themeasurement of the six dynamic interface forces and moments between a shaker table and a tested structure. The FMD was recently utilised for base-driven tests on a liquid propellant tank and support structure. The test set-up and the performance of the dynamic tests are described. During the tests the interface forces, the base accelerations, and the structural responses were recorded. Based on the measured data, a modal analysis is performed and results are given as an example. The identification of effective and modal massesfrom the measured interface forces is demonstrated and exemplary results are discussed.

Item URL in elib:https://elib.dlr.de/39758/
Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=1996,
Title:Measurement and Evaluation of Interface Forces During Base-Driven Tests.
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Füllekrug, U.UNSPECIFIEDUNSPECIFIED
Gschwilm, J.UNSPECIFIEDUNSPECIFIED
Sinapius, M.UNSPECIFIEDUNSPECIFIED
Date:1996
Journal or Publication Title:Proc.Conference on Spacecraft Structures, Materials and Mechanical Testing, ESA SP-386, 1996
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:pp. 897-904
Status:Published
Keywords:multi-axis vibration simulator, experimental modal analysis, interface force measurement
Event Title:Conference on Spacecraft Structures, Materials and Mechanical Testing, Noordwijk, The Netherlands, 27-29 March, 1996.
HGF - Research field:UNSPECIFIED
HGF - Program:Space (old)
HGF - Program Themes:W RP - Raumtransport
DLR - Research area:UNSPECIFIED
DLR - Program:W RP - Raumtransport
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 10:53

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