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Non-proportional nonlinear damping in experimental bladed disk
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SYSNO ASEP 0351996 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title Non-proportional nonlinear damping in experimental bladed disk Author(s) Půst, Ladislav (UT-L) RID
Pešek, Luděk (UT-L) RIDSource Title Engineering Mechanics. - : Association for Engineering Mechanics - ISSN 1802-1484
Roč. 17, 3/4 (2010), s. 237-250Number of pages 14 s. Language eng - English Country CZ - Czech Republic Keywords bladed disk vibrations ; dry friction damping ; imperfection Subject RIV BI - Acoustics R&D Projects GA101/09/1166 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z20760514 - UT-L (2005-2011) Annotation 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. 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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