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Couple stress fluid improve rub-impact rotor-bearing system - Nonlinear dynamic analysis

机译：耦合应力流体改善了碰摩转子轴承系统-非线性动力学分析

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摘要

This study performs a dynamic analysis of the rub-impact rotor supported by two couple stress fluid film journal bearings. The strong nonlinear couple stress fluid film force, nonlinear rub-impact force and nonlinear suspension (hard spring) are presented and coupled together in this study. The displacements in the horizontal and vertical directions are considered for various non-dimensional speed ratios. The numerical results show that the dynamic behaviors of the system vary with the dimensionless speed ratios, the dimension-less unbalance parameters and the dimensionless parameter, l~*. Inclusive of the periodic, sub-harmonic, quasi-periodic and chaotic motions are found in this analysis. The results of this study contribute to a further understanding of the nonlinear dynamics of a rotor-bearing system considering rub-impact force existing between rotor and stator, nonlinear couple stress fluid film force and nonlinear suspension. We also prove that couple stress fluid used to be lubricant do improve dynamics of rotor-bearing system.
机译：这项研究对由两个耦合应力流体膜轴颈轴承支撑的碰摩转子进行了动力学分析。提出了强非线性耦合应力流体膜力，非线性摩擦力和非线性悬架（硬弹簧）并将它们耦合在一起。对于各种无量纲的速比，应考虑水平和垂直方向的位移。数值结果表明，系统的动态行为随无量纲速比，无量纲不平衡参数和无量纲参数l〜*的变化而变化。在此分析中发现了周期性，次谐波，准周期性和混沌运动。这项研究的结果有助于进一步了解转子-轴承系统的非线性动力学，其中考虑了转子和定子之间存在摩擦力，非线性耦合应力流体膜力和非线性悬架。我们还证明，曾经用作润滑剂的偶应力流体确实可以改善转子轴承系统的动力学性能。

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  • 来源
    《Applied Mathematical Modelling》 |2010年第7期|1763-1778|共16页
  • 作者

    Cai-Wan Chang-Jian; Chao-Kuang Chen;

  • 作者单位

    Department of Mechanical and Automation Engineering, I-Shou University, 1, Section 1, Hsueh-Cheng Rd., Ta-Hsu Hsiang, Kaohsiung County 840, Taiwan, ROC;

    Department of Mechanical Engineering, National Cheng-Kung University, Tainan 70101, Taiwan, ROC;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    couple stress fluid; rotor-bearing system; rub-impact;

    机译：耦合应力液;转子轴承系统;摩擦影响;

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