Effects of the Groove Curvature Radius Coefficients on the Flexible Bearing's Stress
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摘要: 采用有限元分析方法,使用ANSYS Workbench建立了柔性轴承的参数化接触模型。对不同沟曲率半径系数的柔性轴承进行静力学接触分析,得到了不同参数的柔性轴承内外圈的变形、应力的分布规律。结果表明:内外圈的最大等效应力和最大径向应力发生在长轴处的钢球与内外滚道接触的区域;内外圈最大等效应力、钢球与沟道的最大接触压力随内外圈沟曲率半径的增加呈线性增大趋势。用该方法能准确得到柔性轴承最大的接触应力,可以用来对柔性轴承进行优化设计。Abstract: A finite element contact analysis parametric model was established by ANSYS Workbench. The study onthe stress and deformation state in the flexible bearing with different radius coefficients has been conducted. Then,the deformation and contact stress state of the inner and outer rings of these flexible bearings were attained. The testresults show that the maximum equivalent and radial stresses appear in running tracks of both rings at the contactwith the ball placed on the major cam axis; the maximum equivalent stresses in both rings and the maximum contactpressures between the balls and the curve increase almost linearly with the increase of the groove curvature radiuscoefficients. The presented approach to a contact analysis of the flexible bearing can help the designer accuratelydetermine the maximum stress of the flexible bearing, which can then be used for its optimizations.
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