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Dynamics of a rotating shaft-disc under a periodic axial force
journal contribution
posted on 2023-06-08, 07:10 authored by Yong-Chen Pei, Huiqi Lu, Chris ChatwinChris ChatwinUnder a periodic axial force, a rotating Timoshenko shaft with a rigid unsymmetrical disc was modelled as a parametrically excited system using the finite-element method. Using a harmonic balance method, dynamic stability of the system was checked, steady-state response, undamped resonance condition, and disc centre orbit were solved analytically and discussed numerically. Furthermore, the time history response was calculated to verify the efficiency of the solutions. The discussion shows that the fluctuating part of the axial force results in system dynamic instability, and the parameter regions of dynamic instability are enlarged with increasing amplitude of the fluctuation; the disc centre orbit of the system steady-state response is limited to an annular region, and the orbit width is increased by the axial force fluctuating amplitude; besides the neighbourhood of the system critical speed, the shaftdisc system can undergo some additional resonances due to the fluctuating axial force.
History
Publication status
- Published
Journal
Proceedings of the Institution of Mechanical Engineers, Part K: Journal of Multi-body DynamicsISSN
1464-4193Publisher
SAGE PublicationsExternal DOI
Issue
2Volume
224Page range
211-219Department affiliated with
- Engineering and Design Publications
Full text available
- No
Peer reviewed?
- Yes
Legacy Posted Date
2012-02-06Usage metrics
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