深沟球轴承动态有限元数字仿真

基于动态接触力学和显式动力学有限元算法,采用三维实体单元建立参数化的深沟球轴承三维有限元模型.利用有限元软件LS-DYNA和自适应网格技术对深沟球轴承的工作运动过程进行了数值模拟,得出了轴承内外圈、滚珠、保持架之间的接触应力、应变的变化情况及接触过程中的压力分布情况.并将计算结果与赫兹理论计算结果进行比较,验证了动态有限元仿真的合理性.在此基础上,综合考虑了轴承原始制造误差、转速、载荷等不同工况对轴承动态性能的影响,为轴承的疲劳强度计算和动态优化设计提供了可靠的理论依据.

Dynamic Finite Element Numerical Simulation for Bearings with Deep Ball Filling Slots

A 3-D parameterized finite element model was developed introducing physical elements for the rolling bearings with deep ball filling slots,based on the dynamic contact and explicit dynamics.With the finite element software ANSYS/LS-DYNA and adaptive grid method,a numerical simulation was done for the whole operating process of those bearings,thus revealing the change in contacting stress strain between the inner/outer ring,rolling balls and ball retainer and relevant pressure in distribution.The result show...