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<p>This study underscores the complexities of rolling bearing structures and their dynamic behaviors during operation. Focusing on the intricate movements of bearings within disc cutters, it investigates the dual revolution of the bearing roller around its axis while simultaneously revolving around the shaft. As working conditions become more demanding and performance expectations escalate, traditional static analysis models prove inadequate for accurately predicting dynamic performance. Therefore, establishing a high-precision bearing dynamics model is essential. A thorough analysis of the shaft-to-bearing system is conducted, incorporating radial and axial forces under varying speed conditions. An explicit dynamic motion simulation of the bearing model uses LS-DYNA software, leveraging the finite element method. The analysis reveals significant patterns in contact stress, equivalent stress, speed, and acceleration under operational conditions, providing valuable insights to enhance the safe operation of bearings in challenging environments. The findings indicate that vertical force is crucial in the hob’s rock-breaking process, whereas lateral and hobbing forces exert minimal influence. Additionally, stress concentrations occur at the roller ends under radial and axial forces, with higher contact stress observed on the outer raceway. Notably, roller stress exhibits a linear increase in response to radial force.</p>

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Analysis of Rolling Bearing Dynamic Behaviors and Structural Complexities in Disc Cutters

  • 期刊论文

  • 发表日期：

    2025年1月1日

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  • Q. Wang,
  • D. Wang,
  • Y. Zhou,
  • C. L. Guo,
  • J. W. Fu,
  • H. Haeri,
  • L. J. Shangguan

摘要

This study underscores the complexities of rolling bearing structures and their dynamic behaviors during operation. Focusing on the intricate movements of bearings within disc cutters, it investigates the dual revolution of the bearing roller around its axis while simultaneously revolving around the shaft. As working conditions become more demanding and performance expectations escalate, traditional static analysis models prove inadequate for accurately predicting dynamic performance. Therefore, establishing a high-precision bearing dynamics model is essential. A thorough analysis of the shaft-to-bearing system is conducted, incorporating radial and axial forces under varying speed conditions. An explicit dynamic motion simulation of the bearing model uses LS-DYNA software, leveraging the finite element method. The analysis reveals significant patterns in contact stress, equivalent stress, speed, and acceleration under operational conditions, providing valuable insights to enhance the safe operation of bearings in challenging environments. The findings indicate that vertical force is crucial in the hob’s rock-breaking process, whereas lateral and hobbing forces exert minimal influence. Additionally, stress concentrations occur at the roller ends under radial and axial forces, with higher contact stress observed on the outer raceway. Notably, roller stress exhibits a linear increase in response to radial force.