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May, Markus (2012) Model updating for the aeroelastic ROM of a modern blisk. In: Proceedings "ISUAAAT 13 (2012)". ISUAAAT 13 (2012) - The 13th International Symposium on Unsteady Aerodynamics, Aeroacoustics and Aeroelasticity of Turbomachines, 2012-09-11 - 2012-09-14, Tokio, Japan.
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Abstract
A simple updating procedure is presented accounting for mistuning deviations of a real UHBR fan rotor within its aeroelastic stability analysis.
Traditionally the flutter analysis of such a configuration is performed via the energy method. This implies the assumption of a rotationally symmetric system with geometrically identical blades, which is rarely the case in reality.
Based on the structural dynamics properties of the real rotor (determined by means of experimental modal analysis) the aeroelastic reduced order model (ROM), of the blisk can be updated with the DLR inhouse tool AEturbo, making use of the CFD outputs aerodynamic work and damping that have been generated previously for the tuned system. The stabilizing effect of this real mistuning pattern is demonstrated by a shift of the flutter boundary in the computed performance map - separately for three mode families as well as for the aeroelastic stability diagram as a whole.
| Item URL in elib: | https://elib.dlr.de/79220/ | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Document Type: | Conference or Workshop Item (Speech, Paper) | ||||||||
| Title: | Model updating for the aeroelastic ROM of a modern blisk | ||||||||
| Authors: |
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| Date: | 2012 | ||||||||
| Journal or Publication Title: | Proceedings "ISUAAAT 13 (2012)" | ||||||||
| Refereed publication: | Yes | ||||||||
| Open Access: | No | ||||||||
| Gold Open Access: | No | ||||||||
| In SCOPUS: | No | ||||||||
| In ISI Web of Science: | No | ||||||||
| Status: | Published | ||||||||
| Keywords: | turbomachinery, aeroelasticity, flutter analysis, frequency mistuning, ROM, experimental modal analysis, modal updating, AEturbo | ||||||||
| Event Title: | ISUAAAT 13 (2012) - The 13th International Symposium on Unsteady Aerodynamics, Aeroacoustics and Aeroelasticity of Turbomachines | ||||||||
| Event Location: | Tokio, Japan | ||||||||
| Event Type: | international Conference | ||||||||
| Event Start Date: | 11 September 2012 | ||||||||
| Event End Date: | 14 September 2012 | ||||||||
| Organizer: | University of Tokyo | ||||||||
| HGF - Research field: | Aeronautics, Space and Transport | ||||||||
| HGF - Program: | Aeronautics | ||||||||
| HGF - Program Themes: | Propulsion Systems (old) | ||||||||
| DLR - Research area: | Aeronautics | ||||||||
| DLR - Program: | L ER - Engine Research | ||||||||
| DLR - Research theme (Project): | L - Fan and Compressor Technologies (old) | ||||||||
| Location: | Göttingen | ||||||||
| Institutes and Institutions: | Institute of Aeroelasticity | ||||||||
| Deposited By: | Erdmann, Daniela | ||||||||
| Deposited On: | 19 Dec 2012 17:18 | ||||||||
| Last Modified: | 24 Apr 2024 19:45 |
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