Numerical simulation of dynamic loading of a test blade in forced torsional vibration

0543237 - ÚT 2022 RIV CZ eng C - Conference Paper (international conference)
Šidlof, P. - Vomáčko, V. - Lepičovský, Jan - Šimurda, David - Štěpán, M. - Luxa, Martin
Numerical simulation of dynamic loading of a test blade in forced torsional vibration.
Dynamics of Machines and Mechanical Systems with Interactions, DYMAMESI 2021. Praha: Institute of Thermomechanics Academy of Sciences of the Czech Republic, v. v. i., 2021 - (Zolotarev, I.; Pešek, L.; Kozień, M.), s. 79-84. ISBN 978-80-87012-75-8.
[DYMAMESI 2021. Cracow - Prague (CZ), 02.03.2021-03.03.2021]
R&D Projects: GA ČR(CZ) GA20-11537S
Institutional support: RVO:61388998
Keywords : blade flutter * structural analysis * torsional vibration
OECD category: Applied mechanics

Within a new project focused on blade flutter research, building on previous experience with the NASA Transonic Flutter Cascade facility, static blade cascade and airfoil flutter experiments realized in cooperation between the Institute of Thermomechanics and Technical University of Liberec, a new test facility is under development for the investigation of high subsonic and transonic flow in a blade cascade under forced torsional oscillation. Apart from aerodynamic loading of the blades, the oscillating blade will be exposed to significant structural stresses due to the highfrequency torsional vibration. In order to avoid structural integrity issues from high-cycle fatigue, a numerical simulation of the stress and displacement of the blade was realized. Regions where equivalent stress reaches maximum values were identified, and elastic deformations were computed. The limits in oscillation amplitude and frequency for the safe operation of the experimental setup were discussed.
Permanent Link: http://hdl.handle.net/11104/0321476