Experimental and numerical investigation of friction element dissipative effects in blade shrouding

0441512 - ÚT 2015 RIV NL eng J - Článek v odborném periodiku
Pešek, Luděk - Hajžman, M. - Půst, Ladislav - Zeman, V. - Byrtus, M. - Brůha, J.
Experimental and numerical investigation of friction element dissipative effects in blade shrouding.
Nonlinear Dynamics. Roč. 79, č. 3 (2015), s. 1711-1726. ISSN 0924-090X. E-ISSN 1573-269X
Grant CEP: GA ČR GA101/09/1166
Institucionální podpora: RVO:61388998
Klíčová slova: turbine blades * contact * friction * finite element method
Kód oboru RIV: BI - Akustika a kmity
Impakt faktor: 3.000, rok: 2015
http://link.springer.com/article/10.1007%2Fs11071-014-1769-3

The reduction of undesirable vibrations of turbine blades damped by the inserted friction elements in the shroud has been investigated. The interaction of the friction elements and blades was described by normal contact and tangential friction forces. Mathematical blade models were based on the finite element method. The dry friction forces were modeled by the modified Coulomb law. The numerical results showed the satisfactory agreement with the experiment.
Trvalý link: http://hdl.handle.net/11104/0244662