Non-proportional nonlinear damping in experimental bladed disk

0351996 - ÚT 2011 RIV CZ eng J - Článek v odborném periodiku
Půst, Ladislav - Pešek, Luděk
Non-proportional nonlinear damping in experimental bladed disk.
Engineering Mechanics. Roč. 17, 3/4 (2010), s. 237-250. ISSN 1802-1484
Grant CEP: GA ČR GA101/09/1166
Výzkumný záměr: CEZ:AV0Z20760514
Klíčová slova: bladed disk vibrations * dry friction damping * imperfection
Kód oboru RIV: BI - Akustika a kmity

Paper is concerned with the flexural vibrations of imperfect bladed circular disk by analytical and numerical solutions. Disk imperfection results from additional two groups of damping heads fixed on opposite ends of one diameter, which introduces point imperfections in mass, stiffness and nonlinear damping and non-proportional distribution of damping properties. The aim of this study is to investigate influence of friction damping among added bladed heads on decrease of resonance amplitudes. Examples based on application of equivalent linearized damping show the properties of such dampers.
Trvalý link: http://hdl.handle.net/11104/0191611