Imposed Rubber Elements for Bladed Wheel Vibration Suppression

0458638 - ÚT 2017 RIV IN eng J - Článek v odborném periodiku
Pešek, Luděk - Půst, Ladislav - Bula, Vítězslav - Cibulka, Jan
Imposed Rubber Elements for Bladed Wheel Vibration Suppression.
Journal of Vibration Engineering & Technologies. Roč. 3, č. 6 (2015), s. 733-741. ISSN 2321-3558
Grant CEP: GA ČR GA101/09/1166
Institucionální podpora: RVO:61388998
Klíčová slova: blade * vibration * damping
Kód oboru RIV: BI - Akustika a kmity
Impakt faktor: 0.098, rok: 2015

The proposed contribution deals with a novel research focusing on bladed wheel vibration suppression by inserted elements of temperature resistive rubberlike materials. The FKM rubber was selected as a perspective material since it is known by its resistances against high temperatures and against aggressive chemicals. As a study case, the five-blade bundle linked by wedge-form rubber elements imposed in the head interspaces of the neighbouring blades was chosen. Thermo-mechanical effect on the dynamics of the bundle was investigated numerically and experimentally and a good agreement was achieved in modal characteristics of both approaches. The results of the study show that although the material damping markedly decreases at higher temperatures around 150 degrees C with respect to a room temperature, the damping capacity of the FKM elements remains still relatively high with comparison to the interblade structural damping as a result of dry friction.
Trvalý link: http://hdl.handle.net/11104/0258891