Blade Vibration on Centrifugal Compressors - Fundamental Considerations and Initial Measurements

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Haupt, U.; Bammert, K.; Rautenberg, M.: Blade Vibration on Centrifugal Compressors - Fundamental Considerations and Initial Measurements. In: International Journal of Turbo and Jet Engines 4 (1987), S. 107-124. DOI: https://doi.org/10.1515/TJJ.1987.4.1-2.107

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Sum total of downloads: 130




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Abstract: 
Blade vibration has to be considered in the design of high pressure ratio / high mass flow centrifugal compressors with increasing rotational speed values due to the reduced blade thickness. Results of a theoretical and experimental investigation concerning this problem are described. FE calculations of the stress distribution on the blade for the lower natural frequencies and various vibration tests at rest were carried out to investigate resonance and damping effects. This preparatory work was aimed at determining blade vibration behavior and acquiring fundamental experience for measurements on compressors in operation. Results of blade vibration measurements on compressors with a vaneless diffuser carried out with semiconductor strain gages and an 8-channel telemetry system are presented for constant rotational speed and for constant throttle valve position, and indicate considerable blade excitation during stall effects. Simultaneous flow measurements complete the investigation to determine the causes of blade vibration. For example, investigations were made of the extent of blade resonance excitation due to non-uniformity of the flow downstream of the impeller or due to flow disturbances caused by carrier blades for bearings in the compressor inlet and simulated by spoilers. © Freund Publishing House Ltd.
License of this version: Es gilt deutsches Urheberrecht. Das Dokument darf zum eigenen Gebrauch kostenfrei genutzt, aber nicht im Internet bereitgestellt oder an Außenstehende weitergegeben werden. Dieser Beitrag ist aufgrund einer (DFG-geförderten) Allianz- bzw. Nationallizenz frei zugänglich.
Document Type: article
Publishing status: publishedVersion
Issue Date: 1987
Appears in Collections:Fakultät für Maschinenbau

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pos. country downloads
total perc.
1 image of flag of Germany Germany 89 68.46%
2 image of flag of China China 11 8.46%
3 image of flag of United States United States 10 7.69%
4 image of flag of Canada Canada 3 2.31%
5 image of flag of No geo information available No geo information available 2 1.54%
6 image of flag of India India 2 1.54%
7 image of flag of Ireland Ireland 2 1.54%
8 image of flag of Europe Europe 2 1.54%
9 image of flag of Czech Republic Czech Republic 2 1.54%
10 image of flag of Vietnam Vietnam 1 0.77%
    other countries 6 4.62%

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