HPC fem calculations for damping estimation of bladed disk with dry-friction contacts

0535524 - ÚT 2021 RIV US eng C - Konferenční příspěvek (zahraniční konf.)
Pešek, Luděk - Šnábl, Pavel - Bula, Vítězslav
HPC fem calculations for damping estimation of bladed disk with dry-friction contacts.
Proceedings of the ASME Design Engineering Technical Conference. New York: American Society of Mechanical Engineers (ASME), 2020, č. článku V007T07A024. ISBN 978-079188396-9.
[ASME 2020 International design engineering technical conferences and computers and information in engineering conference. Virtual, online (US), 17.08.2020-19.08.2020]
Grant ostatní: AV ČR(CZ) StrategieAV21/3
Program: StrategieAV
Institucionální podpora: RVO:61388998
Klíčová slova: damping * turbines * dry friction * finite element methods * computation * wheels
Obor OECD: 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 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 proposed computational strategy for damping evaluation and achieved results, too.
Trvalý link: http://hdl.handle.net/11104/0314840