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Imposed Rubber Elements for Bladed Wheel Vibration Suppression
- 1.0458638 - ÚT 2017 RIV IN eng J - Journal Article
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
R&D Projects: GA ČR GA101/09/1166
Institutional support: RVO:61388998
Keywords : blade * vibration * damping
Subject RIV: BI - Acoustics
Impact factor: 0.098, year: 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.
Permanent Link: http://hdl.handle.net/11104/0258891
Number of the records: 1