The new HPC results of 3D FE modelling of dry-friction damping at tie-boss couplings of bladed wheel - 6nd resonant mode

0543670 - ÚT 2022 RIV CZ eng C - Conference Paper (international conference)
Pešek, Luděk - Šnábl, Pavel - Bula, Vítězslav
The new HPC results of 3D FE modelling of dry-friction damping at tie-boss couplings of bladed wheel - 6nd resonant mode.
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. 59-64. ISBN 978-80-87012-75-8.
[DYMAMESI 2021. Cracow - Prague (CZ), 02.03.2021-03.03.2021]
R&D Projects: GA ČR(CZ) GA20-26779S
Grant - others:Ga MŠk(CZ) LM2015070; AV ČR(CZ) StrategieAV21/3
Program: StrategieAV
Institutional support: RVO:61388998
Keywords : bladed wheel * dry-friction contacts * damping * tie-boss couplings
OECD category: Applied mechanics

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.
Permanent Link: http://hdl.handle.net/11104/0321126