基于Workbench的自润滑关节轴承有限元分析
Finite Element Analysis of Self-Lubricating Spherical Bearings Based on Workbench

针对REBDW-12型自润滑向心关节轴承，基于有限元分析方法，利用Solidworks软件进行轴承的参数化建模。结合AnsysWorkbench软件对自润滑向心关节轴承在两种不同工况下的静力学特性进行分析。输出了该关节轴承内、外圈的von Mises应力分布云图、位移云图以及内圈和外圈之间的接触应力分布云图，得出结论：仅加载径向载荷时，内圈承受的最大von Mises应力位于载荷的加载面，外圈最大等效应力出现在外表面外侧边缘，而最大接触应力则发生在外圈内表面受到挤压处。在承受联合载荷的情况下，轴承内、外圈的最大von Mises应力和最大接触应力均高于仅径向加载时的情况。考虑到关节轴承工作时摩擦生热对其性能的影响，对加载径向载荷下的关节轴承进行了热力耦合分析，结果表明：当关节轴承承受径向载荷并转动时，外圈内球面与内圈外球面之间的摩擦会形成摩擦热，且随着转速增加，温度呈上升趋势。
The REBDW-12 self-lubricating radial spherical bearing underwent finite element analysis using Solidworks software for parametric modeling. Ansys Workbench software was utilized to analyze the static characteristics under two distinct working conditions. Output included von Mises stress distribution clouds, displacement clouds, and contact stress distribution clouds between inner and outer rings. Findings indicated that under radial load alone, the inner ring experienced maximum von Mises stress on the loading surface, while the outer ring experienced maximum equivalent stress at its outer edge and maximum contact stress where the inner surface was squeezed. Combined loads resulted in higher stresses for both rings compared to radial load alone. Thermal coupling analysis was conducted to assess the impact of frictional heat during operation. Results revealed that rotation under radial load generated frictional heat between the inner and outer spherical surfaces, leading to temperature increase with rotation speed.