Model Updating of Modal Parameters from Experimental Data and Applications in Aerospace
Keye, Stefan (2004) Model Updating of Modal Parameters from Experimental Data and Applications in Aerospace. Dissertation. DLR-Forschungsbericht. DLR-FB 2004-34, 197 S.
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The research in this thesis is associated with different aspects of experimental analyses of structural dynamic systems and the correction of the corresponding mathematical models using experimental data. A comprehensive finite-element model updating software technology is assembled and various novel features are implemented. The software technology is integrated into an experimental test facility for structural dynamic identification and used in a number of real life aerospace applications. An iterative correction parameter selection technique and novel approaches for the correction of structural components with non-isotropic and viscous material properties are proposed. The influence of experimental errors on the accuracy of the model corrections is investigated using a numerical simulation procedure. To improve the quality of the experimental reference data a non-iterative method for the computation of optimised multi-point excitation force vectors for Phase Resonance Testing is introduced. Finally, possible advantages of model updating in association with a model-based method for the identification and localisation of structural damage are investigated.
|Document Type:||Monograph (DLR-Forschungsbericht, Dissertation)|
|Title:||Model Updating of Modal Parameters from Experimental Data and Applications in Aerospace|
|Number of Pages:||197|
|Keywords:||Model Updating, experimentelle Modalanalyse|
|Institution:||University of Greenwich|
|Department:||School of Computing and Mathematical Sciences|
|HGF - Research field:||no assignement|
|HGF - Program:||no assignment|
|HGF - Program Themes:||no assignment|
|DLR - Research area:||no assignement|
|DLR - Program:||no assignment|
|DLR - Research theme (Project):||other|
|Institutes and Institutions:||Institute of Composite Structures and Adaptive Systems|
|Deposited By:||Dr.(PH.D.) Stefan Keye|
|Deposited On:||10 Jan 2007|
|Last Modified:||27 Apr 2009 13:16|
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