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Mistuning and Damping of Turbine and Compressor Impellers

  • Turbocharging is known to be a well-established technology for an engine's efficiency and power output by forcing extra compressed air into the combustion chamber. The centrifugal loads, necessary flow deflections, unsteady pressure fluctuations, and structural temperature gradients put a high strain on rotating components. Additionally, those components are prone to high-cycle fatigue. The Chair of Structural Mechanics and Vehicle Vibrational Technology at the BTU Cottbus-Senftenberg investigated the impact of manufacturing tolerances on the vibrational behavior of several turbine and compressor impellers. Finally, it is shown that intentional mistuning can lead to significantly lower stresses.

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Author: Robby Weber, Arnold Kühhorn, Bernd BeirowORCiD
DOI:https://doi.org/10.1007/s38313-019-0090-4
ISSN:2192-9114
Title of the source (English):MTZ worldwide
Document Type:Scientific journal article not peer-reviewed
Language:English
Year of publication:2019
Tag:Compressor Impellers; Damping; Mistuning
Volume/Year:80
Issue number:9
First Page:72
Last Page:77
Faculty/Chair:Fakultät 3 Maschinenbau, Elektro- und Energiesysteme / FG Strukturmechanik und Fahrzeugschwingungen
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