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Response and bifurcation of rotor with squeeze film damper on elastic support

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  • Qin, Weiyang
  • Zhang, Jinfu
  • Ren, Xingmin

Abstract

This paper investigates the nonlinear response and bifurcation of rotor with Squeezed Film Damper (SFD) supported on elastic foundation. The motion equations are derived. To analyze the bifurcation of nonlinear response of SFD rotor, the Floquet Multipliers is obtained by solving the perturbation equations with numerical method. For computing Floquet Multipliers, a novel method is presented in this paper, which can begin integration at the stable solution. Simulation results are given in two figures. One figure, which consists of eight subfigures, gives the effect of rotating speed on the response of SFD damper supported on elastic foundation: with increasing rotating speed, the nonlinear response evolves from quasi-period to period, then jumps between different periods, and finally returns to quasi-period; the corresponding bifurcations are saddle-node bifurcation and secondary Hopf bifurcation. The second figure, which consists of six subfigures, shows that: the support stiffness has large influence on the response of bearings and film force in SFD; large support stiffness can lead to oil whirl in SFD.

Suggested Citation

  • Qin, Weiyang & Zhang, Jinfu & Ren, Xingmin, 2009. "Response and bifurcation of rotor with squeeze film damper on elastic support," Chaos, Solitons & Fractals, Elsevier, vol. 39(1), pages 188-195.
    • Handle: RePEc:eee:chsofr:v:39:y:2009:i:1:p:188-195
    DOI: 10.1016/j.chaos.2007.01.115
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    References listed on IDEAS

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    1. Chang-Jian, Cai-Wan & Chen, Chao-Kuang, 2008. "Chaos and bifurcation of a flexible rotor supported by porous squeeze couple stress fluid film journal bearings with non-linear suspension," Chaos, Solitons & Fractals, Elsevier, vol. 35(2), pages 358-375.
    2. Inayat-Hussain, Jawaid I., 2005. "Bifurcations of a flexible rotor response in squeeze-film dampers without centering springs," Chaos, Solitons & Fractals, Elsevier, vol. 24(2), pages 583-596.
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