在自行设计的轴承试验台上研究了轴颈同期涡动和轴承座激振对油膜层流失稳的影响 .结果表明 :随着轴颈偏心的增大 ,涡动倾向增强 ,流体出现层流失稳 ;当涡动倾向较弱时 ,影响油膜层流失稳的主要因素是轴承激振的强度以及低频激振 ,而高频激振对其影响较小 ;但当涡动倾向较强时 ,轴承激振的强度以及激振频率对油膜层流的失稳几乎没有影响 The effect of journal vortices and bearing housings on the laminar instability of the oil film was studied on a self-designed bearing test bench.The results show that with the increase of the eccentricity of the journal, the vortex tendency increases and the fluid laminar flow instability When the vortex tendency is weak, the main factors affecting the instability of the oil film laminar flow are the strength of the vibration excitation of the bearing and the low-frequency excitation, while the high-frequency excitation has less influence on the laminar flow. However, when the vortex tendency is strong, The intensity of the vibration and the excitation frequency have almost no effect on the instability of the oil film laminar flow