Název: Vibration stability of a vertical flywheel lifted by permanent magnetic rings
Autoři: Zapoměl, Jaroslav ; Ferfecki, P. ; Sudhakar, A. ; Kozánek, Jan
Typ dokumentu: Příspěvky z konference
Konference/Akce: DYMAMESI 2018 - Dynamics of Machines and Mechanical Systems with Interactions, Prague (CZ), 20180306
Rok: 2018
Jazyk: eng
Abstrakt: Lifting the vertical flywheels by permanent magnets is used to reduce energy losses in the support elements. Unstable equilibrium position of pairs of magnetic rings, material damping of the shaft, and nonlinear properties of the support elements can arrive at the flywheel unstable oscillations. Therefore, evaluation of the vibration stability is the essential part of the design process of flywheel devices. In the developed computational procedure the flywheel is represented by a beam-like body, to which an absolutely rigid disc (the actual flywheel) is attached. The determination of the force action between the magnetic rings is based on mutual interaction between two magnetic dipoles. The steady state response of the flywheel on the unbalance excitation is calculated by means of the trigonometric collocation method and its stability is evaluated by application of the Floquet theorem. The developed computational procedures and learning more on behaviour of flywheels lifted by magnetic rings are the main contributions of the carried out research.\n
Klíčová slova: permanent magnets; vertical flywheels; vibration stability
Číslo projektu: StrategieAV21/3
Poskytovatel projektu: AV ČR
Zdrojový dokument: DYMAMESI 2018 - Proceedings, ISBN 978-80-87012-66-6

Instituce: Ústav termomechaniky AV ČR (web)
Informace o dostupnosti dokumentu: Dokument je dostupný v příslušném ústavu Akademie věd ČR.
Původní záznam: http://hdl.handle.net/11104/0286765

Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-386533


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Věda a výzkum > AV ČR > Ústav termomechaniky
Konferenční materiály > Příspěvky z konference