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Nonlinear dynamic analysis of an unbalanced rotor supported by roller bearing

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  • Harsha, S.P.

Abstract

In this paper, the non-linear dynamic analysis of an unbalanced rotor supported by roller bearings has been made. The non-linearity in the rotor bearing system is due to Hertzian contact, unbalanced rotor effect and radial internal clearance. The system can excite bi-periodically by the varying compliance frequency and the rotational frequency. The results show the appearance of instability and chaos in the dynamic response as the speed of the rotor-bearing system is changed. Period doubling and mechanism of intermittency have been observed that lead to chaos. Poincaré maps, phase plots, time displacement responses and FFT are used to elucidate and illustrate the diversity of the system behavior.

Suggested Citation

  • Harsha, S.P., 2005. "Nonlinear dynamic analysis of an unbalanced rotor supported by roller bearing," Chaos, Solitons & Fractals, Elsevier, vol. 26(1), pages 47-66.
    • Handle: RePEc:eee:chsofr:v:26:y:2005:i:1:p:47-66
    DOI: 10.1016/j.chaos.2004.12.014
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