Original title: Numerical simulation of dynamic loading of a test blade in forced torsional vibration
Authors: Šidlof, P. ; Vomáčko, V. ; Lepičovský, Jan ; Šimurda, David ; Štěpán, M. ; Luxa, Martin
Document type: Papers
Conference/Event: DYMAMESI 2021, Cracow - Prague (CZ), 20210302
Year: 2021
Language: eng
Abstract: 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.
Keywords: blade flutter; structural analysis; torsional vibration
Project no.: GA20-11537S (CEP)
Funding provider: GA ČR
Host item entry: Dynamics of Machines and Mechanical Systems with Interactions, DYMAMESI 2021, ISBN 978-80-87012-75-8

Institution: Institute of Thermomechanics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0321476

Permalink: http://www.nusl.cz/ntk/nusl-449077


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