EXPERIMENTAL ANALYSIS OF BLADED WHEEL MODEL WITH TIE-BOSS COUPLINGS – STEADY AND ROTATIONAL STATES

0497774 - ÚT 2019 RIV CZ eng C - Konferenční příspěvek (zahraniční konf.)
Pešek, Luděk - Bula, Vítězslav - Šnábl, Pavel - Cibulka, Jan
EXPERIMENTAL ANALYSIS OF BLADED WHEEL MODEL WITH TIE-BOSS COUPLINGS – STEADY AND ROTATIONAL STATES.
DYMAMESI 2018 - Proceedings. Prague: Institute of Thermomechanics AS CR, v. v. i., 2018 - (Zolotarev, I.; Pešek, L.; Kozieň, M.), s. 47-50. ISBN 978-80-87012-66-6.
[DYMAMESI 2018 - Dynamics of Machines and Mechanical Systems with Interactions. Prague (CZ), 06.03.2018-07.03.2018]
Grant CEP: GA ČR GA16-04546S
Institucionální podpora: RVO:61388998
Klíčová slova: turbine blade * coupling * dry-friction
Obor OECD: Applied mechanics

Experimental modal analysis of the proposed model of bladed wheel with tie-boss couplings was performed for validation of thenumerical FE model. The pre-stresses in contacts were set and evaluated indirectly by the magnetic torque sensor. Then dynamical tests of bladed wheel under revolutions were performed. The
electromagnetic synchronized pulses were used for excitation of forced vibration of the wheel. The Campbell diagram of the wheel with prestressedcontacts was created from the measurement under revolutions. From the attenuation of resonant vibration of the wheel the dampingwas evaluated.
Trvalý link: http://hdl.handle.net/11104/0291278