Contribution to modelling of bladed model disk with dry-friction contacts in tie-bosses

0508632 - ÚT 2020 RIV CZ eng C - Conference Paper (international conference)
Pešek, Luděk - Šnábl, Pavel - Šulc, Petr - Půst, Ladislav - Bula, Vítězslav
Contribution to modelling of bladed model disk with dry-friction contacts in tie-bosses.
The International Colloquium Dynamics of Machines and Mechanical Systems with Interactions : DYMAMESI 2019. Prague: Institute of Thermomechanics CAS, 2019 - (Kozieň, M.; Zolotarev, I.; Pešek, L.), s. 39-42. ISBN 978-80-87012-70-3.
[DYMAMESI 2019. Cracow (PL), 05.03.2019-06.03.2019]
Grant - others: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 behavior of the bladed wheel with pre-stressed dry-friction contacts in tie-bosses was built. The numerical solution of the turbine bladed wheel with tiebosses 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 behavior and damping estimation of our bladed wheel design yielded a reasonable agreement. Limitation of the non-linear solution due to dry friction contacts is HPC computations and long computation times. The contribution will deal with the achieved results.

Permanent Link: http://hdl.handle.net/11104/0304961