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本文通过对油和脂的特性分析,提出了在螺旋槽轴承正常运转条件下,油和脂的动力润滑膜可用同一Navier—Stokes方程来研究。根据螺旋槽轴承的平行槽模型理论,求得螺旋槽轴承光滑压力的广义微分方程式,由摄动法求得微分方程的近似解析解。通过优化计算,得到最大刚度下螺旋槽轴承参数的最优值。并着重对轴承的稳定性进行了讨论。研究结果表明:螺旋槽轴承具有很好的稳定性。同时,我们进行了实验研究,其结果与理论分析是吻合的。
Based on the analysis of the characteristics of oil and grease, the paper presents the same Navier-Stokes equation to study the dynamic lubrication of oil and grease under the normal operation of the spiral groove bearing. According to the parallel groove model theory of spiral groove bearing, the general differential equation of smooth pressure of spiral groove bearing is obtained, and the approximate analytical solution of differential equation is obtained by perturbation method. By optimizing the calculation, the optimum parameters of spiral groove bearing under maximum rigidity are obtained. And focus on the stability of the bearing were discussed. The results show that the spiral groove bearing has good stability. At the same time, we conducted an experimental study, the result is consistent with the theoretical analysis.