Original title: Efficient numerical computation of the steady-state response and stability analysis of the rotor systems with squeeze film dampers
Authors: Molčan, M. ; Ferfecki, P. ; Zapoměl, Jaroslav
Document type: Papers
Conference/Event: International Conference Engineering Mechanics 2020 /26./, Brno (CZ), 20201124
Year: 2020
Language: eng
Abstract: The aim of this paper is to demonstrate capabilities of the created numerical procedure, which is based on harmonic balance method. Furthermore, the procedure incorporates the alternating frequency-time domain technique and the arc-length parameterization to solve the steady-state response of nonlinear systems in efficient manner, including unstable branches. The stability of the motion was assessed by two methods: the 2n-pass method and Hill’s method. The procedure was verified on an example from literature to prove its sufficient accuracy and subsequently, the procedure was applied on the finite element model of the rotor systém mounted on the squeeze film dampers. The carried out computational simulations confirmed that the created procedure is efficient for the strongly nonlinear response and it gives similar results as the time integration.
Keywords: flexible rotor; Floquet theory; harmonic balance method; Hill’s method; nonlinear forces
Host item entry: ENGINEERING MECHANICS 2020, ISBN 978-80-214-5896-3, ISSN 1805-8248

Institution: Institute of Thermomechanics AS ČR (web)
Document availability information: Fulltext is available at external website.
External URL: https://www.engmech.cz/im/doc/EM2020_proceedings.pdf
Original record: http://hdl.handle.net/11104/0316859

Permalink: http://www.nusl.cz/ntk/nusl-433042


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