FE Modeling of Blade Couple with Friction Contacts Under Dynamic Loading

0429652 - ÚT 2015 RIV IN eng J - Článek v odborném periodiku
Pešek, Luděk - Půst, Ladislav - Vaněk, František - Veselý, Jan
FE Modeling of Blade Couple with Friction Contacts Under Dynamic Loading.
Journal of Vibration Engineering & Technologies. Roč. 2, č. 3 (2014), s. 229-238. ISSN 2321-3558
Grant CEP: GA ČR GA101/09/1166
Institucionální podpora: RVO:61388998
Klíčová slova: turbine blades * dry friction * damping
Kód oboru RIV: BI - Akustika a kmity
http://www.tvi-in.com/Journals/journaldetail.aspx?Id=201406251115146464844edeb39be66

The model of the bladed couple with friction element was numerically and experimentally investigated for a vibration suppression evaluation. The dynamics and contact problem of a blade couple with the friction element was modeled by a 3D FE model in ANSYS 11.0. It enables us to analyze the influence of dry friction contact at dynamics of the couple at a different loading, such as resonant forced vibration and free vibration after a short resonant loading. The results show nonlinear effect of the friction coupling namely in the case of macro-slip movements of the friction element in the blade shroud inter-space. The findings about damping ratio are in an agreement with the experimental observations.
Trvalý link: http://hdl.handle.net/11104/0234918