Mathematical model of a blade couple connected by damping element

0360842 - ÚT 2012 RIV BE eng C - Konferenční příspěvek (zahraniční konf.)
Pešek, Luděk - Půst, Ladislav
Mathematical model of a blade couple connected by damping element.
Proceedings of the 8th International Conference on Structural Dynamics, EURODYN2011. Leuven: Katolieke Universiteit Leuven, 2011 - (Roeck, G.; Degrande, G.; Lombaert, G.; Műller, G.), s. 2006-2011. ISBN 9789076019314.
[EURODYN2011 -International Conference on Structural Dynamics /8./. Leuven (BE), 04.06.2011-06.06.2011]
Grant CEP: GA ČR GA101/09/1166
Výzkumný záměr: CEZ:AV0Z20760514
Klíčová slova: dry friction * three masses system * damping of vibrations * chaotic vibrations
Kód oboru RIV: BI - Akustika a kmity

Theoretical solution of forced vibration of three masses system containing two dry friction connections and four elastic stops among these masses is presented. This system is a computational model of physical model of blade couple with friction element measured in dynamic laboratory of Institute of Thermomechanics ASCR. Numerical solution of strongly nonlinear equations of motion shows the good damping properties of dry friction element, shift of resonance due to mistuning of models of blades, but also disadvantageous effect of impacts in stops, resulting in instability and chaotic motion.
Trvalý link: http://hdl.handle.net/11104/0198298