Trawelling waves in circular disk with imperfections

0333329 - ÚT 2010 RIV PL eng C - Konferenční příspěvek (zahraniční konf.)
Půst, Ladislav - Pešek, Luděk
Trawelling waves in circular disk with imperfections.
Dynamical Systems - Theory and Applications (Proceedings). Lodž: Department of Automatics and Biomechanics, 2009 - (Awrejcewicz, J.; Kažmierczak, M.; Olejnik, P.; Mrozowski, J.), s. 345-352. ISBN 978-83-929120-4-0.
[Dynamical Systems - Theory and Applications /10./. Lodž (PL), 07.12.2009-10.12.2009]
Grant CEP: GA ČR GA101/09/1166
Výzkumný záměr: CEZ:AV0Z20760514
Klíčová slova: rotating disk * imperfection * response curves
Kód oboru RIV: BI - Akustika a kmity

The steady state response of a model of circular bladed disk with imperfection is investigated. Disk imperfection results from additional two groups of damping heads fixed on opposite ends of one diameter. These damping heads are introduced into computing model as additional point mass, damping and stiffness. The effect of this type of imperfection is examined both numerically on three dimensional nonrotating FE-model and analytically on a simplified split 2DOF model of rotating disk excited by single point harmonic force. Some examples of response curves illustrate the dynamic properties of rotating mass-damping-stiffness imperfect disk.
Trvalý link: http://hdl.handle.net/11104/0178341