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Automatic updating of large aircraft models using experimental data from ground vibration testing

Göge, D. (2003) Automatic updating of large aircraft models using experimental data from ground vibration testing. Aerospace Schience and Technology, 17 (1), pp. 33-45.

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The aeroelastic stability certification of today's civil aircraft structures requires validated analytical models which have to meet high flutter calculation, fan-blade-off and windmilling certification calculation standards. The dynamic model of the aircraft must be validated in such a way that the dynamic behaviour of the aircraft is reproduced nearly exactly in order to reflect real scenarios when infuriate extreme or flight loads on the model. In addition, the dynamic model must be an accurate representation in order to predict the behaviour of the structure with regard to different boundary conditions. In view of shorter testing times or large scale civil aircraft this topic will increase in importance in the future since correct free-free boundary conditions are very severe to realize during ground vibration testing (GVT). The above mentioned application fields illustrate the all-important role of the validated analytical model within the scope of civil aeronautics. The aim of this study was to find a new way of updating analytical models of large aircraft by using modal data obtained by GVT in order to save time during model validation. A stratety is presented in this article for validating the finite element (FE) model of a civil four-engine aircraft using a computational model updating (CMU) method.

Item URL in elib:https://elib.dlr.de/14369/
Document Type:Article
Additional Information: LIDO-Berichtsjahr=2003,
Title:Automatic updating of large aircraft models using experimental data from ground vibration testing
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Journal or Publication Title:Aerospace Schience and Technology
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
Page Range:pp. 33-45
Keywords:computational model updating, inverse sensitivtiy approach, validation concept for large aircraft, modal data from ground vibration testing
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:other
DLR - Research area:Aeronautics
DLR - Program:L ST - Starrflüglertechnologien
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 21:46

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