游隙及载荷对滚动轴承载荷分布的影响

Effect of Clearance and Load on Rolling Bearing Load Distribution

基于滚动轴承动力学、Hertz弹性接触理论和轴承宏观几何学,建立了滚动轴承的分析模型。分析游隙及载荷对滚动轴承载荷分布的影响。分析结果表明:随着径向游隙的减小,轴承的接触分布范围角增大;随着径向载荷的减小,轴承接触分布范围角减小;当轴承出现负游隙时,轴承内、外圈相对变形量较小,但轴承中滚动体的平均载荷增加,会导致轴承寿命降低。

Based on the bearing dynamic theory, the Hertz contact theory and bearing macroscopic geometry, an analysis mod-el of rolling bearings which analyzes the effect of clearance and load on the load distribution is built in this paper. The resultsshow that the angle of bearing contact distribution increases with decrease of the radial clearance, and it decreases with de-crease of the radial load; while when the negative internal clearance of bearing appears, the relative deformation of inner andouter rings are less, but the average load of rolling elements increases, which would result in the reduction of bearing life.