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首页> 外文期刊>Proceedings of the institution of mechanical engineers >Dynamic modelling for vibration analysis of a cylindrical roller bearing due to localized defects on raceways
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Dynamic modelling for vibration analysis of a cylindrical roller bearing due to localized defects on raceways

机译：由于滚道上的局部缺陷而引起的圆柱滚子轴承振动分析的动态建模

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摘要

The current study presents a multi-body dynamic model for investigating the vibration responses of a cylindrical roller bearing with localized surface defects such as dents on raceways. This model is developed with the assumptions that outer raceway is fixed in space and other elements have three degrees of freedom (DOF): two translations and one rotation. Centrifugal forces, gravity forces and slipping of the rollers are taken into account. The couplings of the Hertzian line contact deformation theory and the slice method are used to calculate all the contact forces. Local deflections due to defects are introduced into the constructed model by the time-varying deflection excitation. The equations of motion are established by the Newton-Euler method and solved by the fourth-order Runge-Kutta integration method with variable steps. Both time and frequency domains are used to analyse dynamic responses of the defective bearing. Some new components of the characteristic defect frequency can be seen from the results. The effects of time-varying surface models, different defect types and defect sizes on dynamic responses of the defective bearing are studied. An experiment is carried out to validate the proposed model. Comparison of the frequency spectrum in simulation results with that in the experiment shows reasonable qualitative agreement.
机译：当前的研究提出了一种多体动力学模型，用于研究具有局部表面缺陷（例如滚道上的凹痕）的圆柱滚子轴承的振动响应。该模型的开发假设是外滚道固定在空间中，其他元素具有三个自由度（DOF）：两个平移和一个旋转。考虑了离心力，重力和辊子的打滑。赫兹线接触变形理论和切片方法的耦合用于计算所有接触力。通过随时间变化的偏转激励将由于缺陷引起的局部偏转引入所构建的模型。通过牛顿-欧拉方法建立运动方程，并通过具有可变步长的四阶Runge-Kutta积分方法求解运动方程。时域和频域均用于分析有缺陷轴承的动态响应。从结果中可以看出特征缺陷频率的一些新成分。研究了时变表面模型，不同缺陷类型和缺陷尺寸对有缺陷轴承动态响应的影响。进行了实验以验证所提出的模型。仿真结果与实验结果的频谱比较表明，该定性合理。

著录项

  • 来源
  • 作者

    Fengtao Wang; Minqing Jing; Jun Yi; Guihua Dong; Heng Liu; Bowen Ji;

  • 作者单位

    State Key Lab for Strength and Vibration of Mechanical Structures, Xi'an Jiaotong University, P. R. China,Key Laboratory of Education Ministry for Modern Design and Rotor-Bearing System, Xi'an Jiaotong University, P. R. China;

    State Key Lab for Strength and Vibration of Mechanical Structures, Xi'an Jiaotong University, P. R. China,Key Laboratory of Education Ministry for Modern Design and Rotor-Bearing System, Xi'an Jiaotong University, P. R. China;

    State Key Lab for Strength and Vibration of Mechanical Structures, Xi'an Jiaotong University, P. R. China,Key Laboratory of Education Ministry for Modern Design and Rotor-Bearing System, Xi'an Jiaotong University, P. R. China;

    State Key Lab for Strength and Vibration of Mechanical Structures, Xi'an Jiaotong University, P. R. China,Key Laboratory of Education Ministry for Modern Design and Rotor-Bearing System, Xi'an Jiaotong University, P. R. China;

    State Key Lab for Strength and Vibration of Mechanical Structures, Xi'an Jiaotong University, P. R. China,Key Laboratory of Education Ministry for Modern Design and Rotor-Bearing System, Xi'an Jiaotong University, P. R. China,School of Mechanical Engineering, Xi'an Jiaotong University, Xianning West Road, Xi'an, Shaanxi 710049, P. R. China;

    State Key Lab for Strength and Vibration of Mechanical Structures, Xi'an Jiaotong University, P. R. China,Key Laboratory of Education Ministry for Modern Design and Rotor-Bearing System, Xi'an Jiaotong University, P. R. China;

  • 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

    Cylindrical roller bearings; bearing defects; defect types; dynamic model; impulse forces;

    机译：圆柱滚子轴承;轴承缺陷;缺陷类型;动态模型冲力;

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