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Dynamical Behavior Analysis of Rubbing Rotor System under Asymmetric Oil Film Force

机译：不对称油膜力下摩擦转子系统的动态行为分析

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摘要

Rubbing is one of the most common and significant faults that exist in the rotor system. It exhibits extremely complicated dynamic behavior. Existing dynamic models are primarily based on the symmetrical rotor structure, in which the oil film forces at both ends of support are considered identical. However, in practice, the oil film force may be differently affected by multiple factors (e.g., viscosity of lubricants, the thickness of oil film, and clearance of journal bearing). In this study, a novel dynamic model of the rubbing rotor system under asymmetric oil film force was developed. Furthermore, based on the nonlinear rotor dynamic theory, its dynamic behavior with different parameters was analyzed, and the corresponding chaotic features were extracted. The results indicated that the evolution law of chaotic motion was more complicated, and the chaotic region of system response was obviously wider under the asymmetric oil film force than the symmetrical oil film force.
机译：摩擦是转子系统中存在的最常见和最重要的故障之一。它表现出极其复杂的动态行为。现有的动态模型主要基于对称转子结构，其中载体两端的油膜力被认为是相同的。然而，在实践中，油膜力可能受到多种因素的不同影响（例如，润滑剂的粘度，油膜的厚度和轴颈轴承的间隙）。在该研究中，开发了一种非对称油膜力下摩擦转子系统的新型动态模型。此外，基于非线性转子动态理论，分析了具有不同参数的动态行为，提取了相应的混沌特征。结果表明，混沌运动的演化规律更加复杂，并且在不对称的油膜力下比对称油膜力明显较宽的系统响应的混沌区域。

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  • 来源
    《Mathematical Problems in Engineering》 |2019年第16期|1253646.1-1253646.16|共16页
  • 作者

    Tang Youfu; Lin Feng; Zou Qian;

  • 作者单位

    Northeast Petr Univ Mech Sci & Engn Inst Daqing 163318 Peoples R China;

    Northeast Petr Univ Mech Sci & Engn Inst Daqing 163318 Peoples R China;

    Res Inst Petr Explorat & Dev Beijing 100083 Peoples R China;

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