Dynamics of a rotating shaft-disc under a periodic axial force

Pei, Yong-Chen, Lu, Huiqi and Chatwin, Chris (2010) Dynamics of a rotating shaft-disc under a periodic axial force. Proceedings of the Institution of Mechanical Engineers, Part K: Journal of Multi-body Dynamics, 224 (2). pp. 211-219. ISSN 1464-4193

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Abstract

Under 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.

Item Type: Article
Schools and Departments: School of Engineering and Informatics > Engineering and Design
Depositing User: Huiqi Lu
Date Deposited: 06 Feb 2012 20:39
Last Modified: 11 Jul 2012 12:13
URI: http://sro.sussex.ac.uk/id/eprint/27213
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