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Toward a 3D dynamic model of a faulty duplex ball bearing

机译：建立故障双球轴承的3D动力学模型

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摘要

Bearings are vital components for safe and proper operation of machinery. Increasing efficiency of bearing diagnostics usually requires training of health and usage monitoring systems via expensive and time-consuming ground calibration tests. The main goal of this research, therefore, is to improve bearing dynamics modeling tools in order to reduce the time and budget needed to implement the health and usage monitoring approach. The proposed three-dimensional ball bearing dynamic model is based on the classic dynamic and kinematic equations. Interactions between the bodies are simulated using non-linear springs combined with dampers described by Hertz-type contact relation. The force friction is simulated using the hyperbolic-tangent function. The model allows simulation of a wide range of mechanical faults. It is validated by comparison to known bearing behavior and to experimental results. The model results are verified by demonstrating numerical convergence. The model results for the two cases of single and duplex angular ball bearings with axial deformation in the outer ring are presented. The qualitative investigation provides insight into bearing dynamics, the sensitivity study generalizes the qualitative findings for similar cases, and the comparison to the test results validates model reliability. The article demonstrates the variety of the cases that the 3D bearing model can simulate and the findings to which it may lead. The research allowed the identification of new patterns generated by single and duplex bearings with axially deformed outer race. It also enlightened the difference between single and duplex bearing manifestation. In the current research the dynamic model enabled better understanding of the physical behavior of the faulted bearings. Therefore, it is expected that the modeling approach has the potential to simplify and improve the development process of diagnostic algorithms.
机译：轴承是确保机械安全正确运行的重要组件。轴承诊断效率的提高通常需要通过昂贵且耗时的地面校准测试来培训健康和使用情况监视系统。因此，本研究的主要目标是改进轴承动力学建模工具，以减少实施运行状况和使用情况监视方法所需的时间和预算。所提出的三维滚珠轴承动力学模型基于经典的动力学和运动学方程。主体之间的相互作用是使用非线性弹簧与阻尼器（通过赫兹型接触关系描述）组合来模拟的。使用双曲正切函数模拟力摩擦。该模型可以模拟各种机械故障。通过与已知轴承行为和实验结果进行比较来验证它。通过证明数值收敛来验证模型结果。给出了两种情况下单轴承和双轴承在外圈中产生轴向变形的模型结果。定性研究提供了对轴承动力学的深入了解，敏感性研究概括了类似情况下的定性发现，并且与测试结果的比较验证了模型的可靠性。本文演示了3D轴承模型可以模拟的各种情况以及可能导致的结果。该研究允许识别具有轴向变形外圈的单轴承和双轴承产生的新模式。这也启发了单轴承和双轴承表现形式之间的差异。在当前的研究中，动力学模型可以更好地了解故障轴承的物理行为。因此，期望建模方法具有简化和改进诊断算法开发过程的潜力。

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  • 来源
    《Mechanical systems and signal processing》 |2015年第3期|242-258|共17页
  • 作者

    Gideon Kogan; Renata Klein; Alex Kushnirsky; Jacob Bortman;

  • 作者单位

    Pearlstone Center for Aeronautical Engineering Studies and Laboratory for Mechanical Health Monitoring, Department of Mechanical Engineering, Ben-Gurion University of the Negev, P.O. Box 653, Beer Sheva 8410501, Israel;

    R.K. Diagnostics, P.O. Box 101, Gilon, D.N. Misgav 20103, Israel;

    Pearlstone Center for Aeronautical Engineering Studies and Laboratory for Mechanical Health Monitoring, Department of Mechanical Engineering, Ben-Gurion University of the Negev, P.O. Box 653, Beer Sheva 8410501, Israel;

    Pearlstone Center for Aeronautical Engineering Studies and Laboratory for Mechanical Health Monitoring, Department of Mechanical Engineering, Ben-Gurion University of the Negev, P.O. Box 653, Beer Sheva 8410501, Israel;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Rolling element bearing; Non-linear dynamics; Hertzian contact; Health monitoring; Fault simulation; Duplex bearing;

    机译：滚动轴承;非线性动力学;赫兹联系;健康监测;故障仿真;双向轴承;

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