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Utilization of multi-axial shaking tables for the modal identification of structures

Füllekrug, U. (2001) Utilization of multi-axial shaking tables for the modal identification of structures. Philosophical Transactions of the Royal Society, 359 (1786), pp. 1753-1771.

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Abstract

A multi-axial shaking table is normally used for earthquake simulation and the dynamic qualification of structures. In most cases the same set-up can also be used for a modal identification of the tested structure. However, this requires the application of suitable modal identification methods. Here the theory and the basic principles of modal identification by multi-axial base excitation are described. Starting with the relative kinematics and the fundamental dynamic relationships, the specifics of base excitation are explained. Equations for the structural responses and the dynamic forces at the interface are presented and discussed. A survey of identification approaches developed at DLR, Göttingen is given. A frequency- and a time-domain method are described in more detail and illustrated by their application to a laboratory structure. The frequency-domain method is best suited for a general and reliable modal identification, whereas the time-domain method is capable of analysing transient vibrations. Also the frequency-domain identification of a larger structure is outlined.

Item URL in elib:https://elib.dlr.de/14279/
Document Type:Article
Additional Information: LIDO-Berichtsjahr=2001,
Title:Utilization of multi-axial shaking tables for the modal identification of structures
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Füllekrug, U.UNSPECIFIEDUNSPECIFIED
Date:2001
Journal or Publication Title:Philosophical Transactions of the Royal Society
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:Yes
Volume:359
Page Range:pp. 1753-1771
Status:Published
Keywords:structural dynamics, modal identification, frequency domain, time domain, base excitation, multi-axial vibration test facilities
HGF - Research field:other
HGF - Program:UNSPECIFIED
HGF - Program Themes:UNSPECIFIED
DLR - Research area:no assignment
DLR - Program:UNSPECIFIED
DLR - Research theme (Project):UNSPECIFIED
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity
Deposited By: DLR-Beauftragter, elib
Deposited On:16 Sep 2005
Last Modified:14 Jan 2010 21:39

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