Počet záznamů: 1

Testing of dynamics of blade wheel with double periodicity

  1. 1.
    0349155 - UT-L 2011 RIV CZ eng J - Článek v odborném periodiku
    Pešek, Luděk - Vaněk, František - Půst, Ladislav - Bula, Vítězslav - Cibulka, Jan
    Testing of dynamics of blade wheel with double periodicity.
    Engineering Mechanics. Roč. 17, 3/4 (2010), s. 161-172 ISSN 1802-1484
    Grant CEP: GA ČR GA101/09/1166
    Výzkumný záměr: CEZ:AV0Z20760514
    Klíčová slova: dynamics * bladed wheel * rotation * mistuning
    Kód oboru RIV: BI - Akustika a kmity

    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.
    Trvalý link: http://hdl.handle.net/11104/0189468