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Self-excited vibrations of bladed wheel analytical model with nozzle excitation and dry friction damping
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SYSNO ASEP 0549616 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Self-excited vibrations of bladed wheel analytical model with nozzle excitation and dry friction damping Author(s) Šnábl, Pavel (UT-L) ORCID
Půst, Ladislav (UT-L) RID
Pešek, Luděk (UT-L) RIDNumber of authors 3 Source Title 14th International Conference on Vibration Problems, ICOVP 2019, Lecture Notes in Mechanical Engineering, 58. - Heidelberg : Springer, 2021 / Sapountzakis E.J. ; Biswas P. ; Banerjee M. ; Inan E. - ISSN 2195-4356 - ISBN 978-98-115-8048-2 Pages s. 353-366 Number of pages 13 s. Publication form Print - P Action International conference on vibration problems. ICOVP 2019 /14./ Event date 01.09.2019 - 04.09.2019 VEvent location Hersonissos Country GR - Greece Event type WRD Language eng - English Country DE - Germany Keywords bladed wheel vibrations ; dry friction damping ; self-excitation ; Van der Pol model Subject RIV BI - Acoustics OECD category Applied mechanics R&D Projects TN01000007 GA TA ČR - Technology Agency of the Czech Republic (TA ČR) Institutional support UT-L - RVO:61388998 EID SCOPUS 85104959706 DOI 10.1007/978-981-15-8049-9_21 Annotation In this contribution, a bladed wheel with dry friction couplings in tie bosses between neighbouring blades is studied. Bladed wheel is excited by stator nozzle excitation in addition to aeroelastic self-excitation modelled by Van der Pol model. Two types of self-excitation are studied, the first is dependent on absolute motion of each blade, the second on relative motions between neighbouring blade pairs. Results of simulations are shown for both cases for various number of stator blades and friction forces in tie-boss contacts. Damping ability of those contacts are compared. Workplace Institute of Thermomechanics Contact Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Year of Publishing 2022 Electronic address https://link.springer.com/chapter/10.1007%2F978-981-15-8049-9_21
Number of the records: 1