When the oil supply is not adequate to maintain the ideal lubrication, angular contact ball bearing will enter into the starved lubrication regime resulting in the potential performance degradation and consequently the severe failures. To study the effects of starved lubrication on the performance of angular contact ball bearing, this paper first proposes a multi-degree-of-freedom (DOF) tribo-dynamic model by introducing five-DOF inner ring, six-DOF balls, and six-DOF cage. The model considers the starved lubrication in the ball-raceway contact and the full multi-body interactions between the bearing components. With different ball-raceway starvation degrees being analyzed, the effects of starved lubrication on the bearing tribo-dynamic performance are first revealed. By comparison, it is found that the oil film thickness, the skidding performance, and the traction forces in the ball-raceway contact are significantly influenced by the starvation degrees. It is also found that the starvation-induced change of the ball-pocket contact force is dramatical under combined loads, and the maximum contact force under this load condition increases with the increasing starvation degrees.

当供油量不足以维持理想的润滑时，角接触球轴承将进入润滑不足状态，导致潜在的性能下降，从而导致严重故障。为了研究缺乏润滑对角接触球轴承性能的影响，本文首先通过引入五自由度内圈、六自由度滚珠和六-自由度笼。该模型考虑了滚珠滚道接触中的润滑不足和轴承部件之间的完整多体相互作用。通过分析不同的滚珠滚道贫油程度，首次揭示了贫油润滑对轴承摩擦动力性能的影响。通过对比发现，油膜厚度、打滑性能、并且滚珠滚道接触中的牵引力受饥饿程度的显着影响。还发现，在联合载荷下，球袋接触力的饥饿引起的变化是显着的，并且该载荷条件下的最大接触力随着饥饿程度的增加而增加。