Original title: The new HPC results of 3D FE modelling of dry-friction damping at tie-boss couplings of bladed wheel - 6nd resonant mode
Authors: Pešek, Luděk ; Šnábl, Pavel ; Bula, Vítězslav
Document type: Papers
Conference/Event: DYMAMESI 2021, Cracow - Prague (CZ), 20210302
Year: 2021
Language: eng
Abstract: The paper is a direct continuation of our study published in the last colloquium DYMAMESI. This paper deals with the new results of dry-friction damping calculation of the bladed wheel with tie-boss couplings vibrating at a higher resonant mode, i.e. mode with 6 nodal diameters (ND). The numerical solution of the wheel based on 3D finite element method with surface-to-surface dry friction contact model is applied. Due to dry friction contacts and non-linear solution, it leads to HPC computations and long computation times. Therefore, the earlier proposed computational strategy for damping evaluation where the resonant attenuation is computed directly from the defined resonant initial conditions given by the 6ND mode is used. Comparison of experimental and numerical results of dynamical behaviour of the bladed wheel yields a reasonable agreement for the studied vibration mode.
Keywords: bladed wheel; damping; dry-friction contacts; tie-boss couplings
Project no.: GA20-26779S (CEP), LM2015070 (CEP), StrategieAV21/3
Funding provider: GA ČR, Ga MŠk, AV 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/11104/0321126

Permalink: http://www.nusl.cz/ntk/nusl-448651


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