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Non-proportional nonlinear damping in experimental bladed disk
- 1.0351996 - ÚT 2011 RIV CZ eng J - Journal Article
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
R&D Projects: GA ČR GA101/09/1166
Institutional research plan: CEZ:AV0Z20760514
Keywords : bladed disk vibrations * dry friction damping * imperfection
Subject RIV: BI - Acoustics
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.
Permanent Link: http://hdl.handle.net/11104/0191611
Number of the records: 1