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Testing of dynamics of blade wheel with double periodicity
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SYSNO ASEP 0349155 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title Testing of dynamics of blade wheel with double periodicity Author(s) Pešek, Luděk (UT-L) RID
Vaněk, František (UT-L) RID
Půst, Ladislav (UT-L) RID
Bula, Vítězslav (UT-L) RID
Cibulka, Jan (UT-L)Source Title Engineering Mechanics. - : Association for Engineering Mechanics - ISSN 1802-1484
Roč. 17, 3/4 (2010), s. 161-172Number of pages 12 s. Language eng - English Country CZ - Czech Republic Keywords dynamics ; bladed wheel ; rotation ; mistuning Subject RIV BI - Acoustics R&D Projects GA101/09/1166 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z20760514 - UT-L (2005-2011) Annotation The dynamics of the mistuned model of the test bladed disc with double periodicity was experimentally investigated. The mistuning arised due to the implementation of two bunches of blades with damping heads fixed on opposite ends of the diameter. The dry friction effect in the heads was treated. The scale for measurement of the electromagnetic force acting on the disc was designed. It enables to analyse the real electromagnetic excitation of the disc under rotation and evaluation of the FRF characteristics from measured blade responses under rotation. The identified eigenfrequencies and damping constants served as indicators for assessment of stiffening and damping effects of the friction couplings in the heads. Workplace Institute of Thermomechanics Contact Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Year of Publishing 2011
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