Albrecht, Sascha and Haase, Thomas (2013) Experimentelle Untersuchungen zur Systemidentifikation und Anregung von Faserverbundstrukturen. DLR-Interner Bericht. DLR-IB 131-2013/50. Other. 74 S.
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Abstract
Deutsch:
Mit Hilfe der Modalanalyse-Software X-Modal III werden die modalen Eigenschaften von drei
experimentell untersuchten Systemen identifiziert und die verwendeten Identifikationsverfahren
verglichen. Am Ende der Arbeit werden zur Optimierung der simulierten Fluid-Struktur-
Kopplung Druck-Messungen mit simulierter Druckdaten verglichen.
Die Ergebnisse der Systemidentifikationen zeigen: für nahezu proportional gedämpfte Systeme
sind gute Reproduktionen der gemessenen Übertragungsfunktionen möglich. Bei Systemen,
die nicht nur schwach gedämpft sind, sollten die proportionalen Dämpfungsfaktoren und die
Skalierung der Eigenvektoren angepasst werden.
English:
The modal properties of three experimental systems were identified based upon the modal
analysis software X-Modal III. Gain is a comparison of methods for identification. The last
chapter treats a comparison of measured and simulated pressure data as a background for
optimizing the simulated fluid structure interaction.
The identification results i a demonstration, that a good reproduction of measured transferfunc-tions
is able for nearly proportional damped systems. If the systems aren’t lower damped,
the proportional damping ratio and the eigenvector scaling should be fitted.
| Item URL in elib: | https://elib.dlr.de/83383/ | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Document Type: | Monograph (DLR-Interner Bericht, Other) | ||||||||||||
| Title: | Experimentelle Untersuchungen zur Systemidentifikation und Anregung von Faserverbundstrukturen | ||||||||||||
| Authors: |
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| Date: | May 2013 | ||||||||||||
| Refereed publication: | No | ||||||||||||
| Open Access: | No | ||||||||||||
| Number of Pages: | 74 | ||||||||||||
| Status: | Published | ||||||||||||
| Keywords: | Modalanalyse, Akustik, Modellbildung | ||||||||||||
| HGF - Research field: | Aeronautics, Space and Transport, Aeronautics, Space and Transport | ||||||||||||
| HGF - Program: | Aeronautics, Aeronautics | ||||||||||||
| HGF - Program Themes: | Aircraft Research (old), L VU - Air Traffic and Environment (old) | ||||||||||||
| DLR - Research area: | Aeronautics, Aeronautics | ||||||||||||
| DLR - Program: | L AR - Aircraft Research, L VU - Air Traffic and Environment | ||||||||||||
| DLR - Research theme (Project): | L - Simulation & Validation (old), L - Quiet Air Traffic (old) | ||||||||||||
| Location: | Braunschweig | ||||||||||||
| Institutes and Institutions: | Institute of Composite Structures and Adaptive Systems > Adaptronics | ||||||||||||
| Deposited By: | Böhringer-Thelen, Isolde | ||||||||||||
| Deposited On: | 25 Jul 2013 12:44 | ||||||||||||
| Last Modified: | 25 Jul 2013 12:44 |
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