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Content Provider | The American Society of Mechanical Engineers (ASME) Digital Collection |
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Author | Pesek, Ludek Pust, Ladislav Bula, Vitezslav Cibulka, Jan |
Copyright Year | 2017 |
Abstract | This contribution deals with a design of bladed wheel model with tie-boss couplings for numerical and experimental dynamic analysis. Besides modal analysis of the linearized wheel model a non-linear dynamical response of the three blade bundle with friction couplings in the tie-bosses were computed for description of a friction damping. Three-dimensional FE model with friction contacts 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 velocity was considered. The damping ratio of the friction damping was evaluated from the envelope of free vibration attenuations after short harmonic excitation. The first experimental results for validation of the numerical model are discussed at the end. |
Sponsorship | Design Engineering Division Computers and Information in Engineering Division |
File Format | |
ISBN | 9780791858226 |
DOI | 10.1115/DETC2017-67118 |
Volume Number | Volume 8: 29th Conference on Mechanical Vibration and Noise |
Conference Proceedings | ASME 2017 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference |
Language | English |
Publisher Date | 2017-08-06 |
Publisher Place | Cleveland, Ohio, USA |
Access Restriction | Subscribed |
Subject Keyword | Damping Blades Computer simulation Modal analysis Wheels Dynamic analysis Stress Dry friction Couplings Design Finite element model Numerical analysis Friction Free vibrations Excitation Coulomb's law |
Content Type | Text |
Resource Type | Article |
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