Bladed wheel model with tie-boss couplings for dynamic analysis

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F17%3A00478812" target="_blank" >RIV/61388998:_____/17:00478812 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Bladed wheel model with tie-boss couplings for dynamic analysis
Original language description
This contribution deals with a design of bladed wheel model with tie-bosses for numerical and experimental dynamic analysis of the turbine blades with dry-friction couplings. Besides modal analysis of the linearized wheel model a non-linear dynamical response of the three blade bundel with friction couplings in the tie-bosses were computed for description of a friction damping. Three-dimensional FE model with friction contact was developed in the program ANSYS 15.0. The Augmented Lagrangian method was used to compute contact normal pressures and friction stresses. The friction coupling was modeled by the Isotropic Coulomb´s law. For a description of the friction coefficient, its dependence on relative volocity was considered. The damping ratio of the friction damping was evaluated from the envelope of free vibration attenuations after short harmonic excitation.
Czech name
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Czech description
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Project
<a href="/en/project/GA16-04546S" target="_blank" >GA16-04546S: Aero-elastic couplings and dynamic behaviour of rotational periodic bodies</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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