Dry Friction Interblade Damping by 3D FEM Modelling of Bladed Disk: HPC Calculations Compared with Experiment | Zendy

Luděk Pešek | Zendy; Pavel Šnábl | Zendy; Vítězslav Bula | Zendy

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Dry Friction Interblade Damping by 3D FEM Modelling of Bladed Disk: HPC Calculations Compared with Experiment

Author(s) -

Luděk Pešek,

Pavel Šnábl,

Vítězslav Bula

Publication year - 2021

Publication title -

shock and vibration

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.418

H-Index - 45

eISSN - 1875-9203

pISSN - 1070-9622

DOI - 10.1155/2021/5554379

Subject(s) - finite element method , computation , boss , vibration , dry friction , nonlinear system , structural engineering , mechanics , engineering , materials science , acoustics , mechanical engineering , physics , computer science , composite material , algorithm , quantum mechanics

Interblade contacts and damping evaluation of the turbine bladed wheel with prestressed dry friction contacts are solved by the 3D finite element method with the surface-to-surface dry friction contact model. This makes it possible to model the space relative motions of contact pairs that occur during blade vibrations. To experimentally validate the model, a physical model of the bladed wheel with tie-boss couplings was built and tested. HPC computation with a proposed strategy was used to lower the computational time of the nonlinear solution of the wheel resonant attenuation used for damping estimation. Comparison of experimental and numerical results of damping estimation yields a very good agreement.

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