ISSN   1004-0595

CN  62-1095/O4

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彭鹏, 汪久根. 有限长滚子黏滑接触分析[J]. 摩擦学学报, 2019, 39(1): 57-64. DOI: 10.16078/j.tribology.2018010
引用本文: 彭鹏, 汪久根. 有限长滚子黏滑接触分析[J]. 摩擦学学报, 2019, 39(1): 57-64. DOI: 10.16078/j.tribology.2018010
Peng PENG, Jiugen WANG. Contact and Stick Slip of Finite Length Roller[J]. TRIBOLOGY, 2019, 39(1): 57-64. DOI: 10.16078/j.tribology.2018010
Citation: Peng PENG, Jiugen WANG. Contact and Stick Slip of Finite Length Roller[J]. TRIBOLOGY, 2019, 39(1): 57-64. DOI: 10.16078/j.tribology.2018010

有限长滚子黏滑接触分析

Contact and Stick Slip of Finite Length Roller

  • 摘要: 有限长线接触在齿轮传动与滚子轴承中广泛存在,滚子端部的应力集中严重影响机械零件的疲劳寿命. 本文中基于矩阵法和重叠半空间模型方法建立了有限长滚子黏滑接触的数值计算模型,利用共轭梯度法和快速傅里叶变换方法对模型进行了求解;并且分析了滚子自由端面和不同切向力对滚子黏滑接触的影响. 结果表明:当两有限长滚子的自由端面完全重合时,切应力在端面不会出现应力集中现象,端面的黏着区域相比于中间截面的黏着区会缩小. 此外,随着切向力的增大,端面黏滑区域的切应力增大.

     

    Abstract: Finite length contact problems widely exist in gear transmission and roller bearings, and the stress concentration at the two ends of the rollers significantly affects the fatigue life of mechanical elements. This paper presented a numerical model to simulate the contact behaviors of finite line contact. The numerical model is based on the matrix formulation and overlapping concept. The solution of the model is then obtained with conjugate gradient method and the fast Fourier transform. Furthermore, this approach is extended to investigate the influences of the free edges and tangential force on stick slip in the contact zone. The results demonstrate that when the two rollers in contact are under the coincident end condition, the stick zone shrink at the free ends. Moreover, the increase of tangential force enhances the shear traction in the slip region nearby the two free edges.

     

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