滚动轴承在任意方向的支承刚度

为仔细分析高速转子——滚动轴承系统的动力学特性,本文提出了滚动轴承在任意方向的支承刚度的概念,应用弹性理论和滚动轴承内部几何关系,推导了滚动轴承在任意方向的支承刚度的数学表达式。同时还提出了球轴承和单列向心短圆柱滚子轴承在外载荷作用下内圈位移的简化表达式,给出了计算方法和编制了相应的计算程序。 为验证上述理论的正确性和程序的可靠性,应用本文方法进行了大量的计算试验,与美国空军推进实验室所提供的轴承刚度的资料相比较,计算结果相当吻合。在此基础上,本文还进一步探讨了轴承的轴向负荷和径向负荷、径向间隙和负荷分布参数对轴承刚度的重要影响,得到了许多重要结论。

Rolling Bearing Stiffness in Arbitrary Direction

This paper presents a new concept of roiling bearing stiffness in arbitrary direction, which is necessary to the investigation of rotor bearing dynamics. It includes the axial stiffness and the arbitrary radial stiffness of the rolling bearing, teased on the elasticity theory and the geometrical parameters of the bearing.the approximate formula? of the axial stiffness, the arbitrary radial stiffness and the inner ring displacements are derived. Furthermore,the paper also discusses the effects of the loads,the radial clearance and the load distribution parameters on the rolling bearing stillness.In order to verify the model and the computer program, the authors have in detail ana lyzed an example of a ball bearing.It shows that the model and the program are reliable and the results are consistent with the data supplied by the U. S. Air Force Aero-propulsion Laboratory.