Journal
APPLIED MATHEMATICAL MODELLING
Volume 32, Issue 7, Pages 1370-1380Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.apm.2007.04.005
Keywords
active magnetic bearing; multi-excitation forces; primary resonance
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This paper presents a study of the non-linear response of a simple rigid disk-rotor, supported by active magnetic bearings (AMB), without gyroscopic effects. The case of primary resonance is examined under multi-excitation forces. The rotating shaft is described by a coupled second order non-linear ordinary differential equations. Approximate solutions are sought applying the method of multiple scales. Numerical simulations are carried out to illustrate the steady-state response and the stability of the solutions for various parameters using the frequency response function method. It is shown that the system parameters have different effects on the non-linear response of the rotor. For steady-state response, however, multiple-valued solutions and jump phenomenon occur. Results are compared to previously published work. (C) 2007 Elsevier Inc. All rights reserved.
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