Contribution to HPC FEM calculations of bladed disk dynamics with dry-friction contacts

0535470 - ÚT 2021 RIV CZ eng C - Conference Paper (international conference)
Pešek, Luděk - Šnábl, Pavel - Bula, Vítězslav
Contribution to HPC FEM calculations of bladed disk dynamics with dry-friction contacts.
Dymamesi 2020. Praha: Institute of Thermomechanics Academy of Sciences of the Czech Republic, v. v. i., 2020 - (Zolotarev, I.; Pešek, L.; Kozieň, M.), s. 33-38. First edition. ISBN 978-80-87012-73-4.
[International colloquium DYMAMESI 2020. Praha (CZ), 03.03.2020-04.03.2020]
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 experimental set-up for studying dynamical behaviour of the bladed wheel with pre-stressed dry-friction contacts in tie-bosses was built. The numerical solution of the turbine bladed wheel with tie-bosses based on 3D finite element method with surface to surface dry-friction contact model is proposed. Comparison of experimental and preliminary numerical results of dynamical behaviour and damping estimation of our bladed wheel design yielded a reasonable agreement. Due to dry-friction contacts and non-linear solution of 3D FE model it, however, leads to HPC computations and long computation times. The contribution deals with description of computational strategy for damping evaluation and achieved results, too.
Permanent Link: http://hdl.handle.net/11104/0314833