CAJ | 학술논문

针对滑动轴承转子系统存在的尺寸误差,建立了非线性油膜力模型,着重研究了滑动轴承与轴颈直径误差及其交互作用对系统动力学特性、承载能力和稳定性的影响,并利用稳定性临界转速对应的偏心率,定量分析了偏心率对滑动轴承转子系统摩擦功率损失的影响。图形曲线分析表明,各种尺寸变化对系统会产生不同程度的影响,摩擦功率随着偏心率的增大而减小,当偏心率在0.6948附近时摩擦功率达到最小。研究结果为减小系统功耗、合理设计系统参数提供了可靠的依据。
침대활동축승전자계통존재적척촌오차,건립료비선성유막력모형,착중연구료활동축승여축경직경오차급기교호작용대계통동역학특성、승재능력화은정성적영향,병이용은정성림계전속대응적편심솔,정량분석료편심솔대활동축승전자계통마찰공솔손실적영향。도형곡선분석표명,각충척촌변화대계통회산생불동정도적영향,마찰공솔수착편심솔적증대이감소,당편심솔재0.6948부근시마찰공솔체도최소。연구결과위감소계통공모、합리설계계통삼수제공료가고적의거。
According to the existences of dimensional errors on hydrodynamic journal bearing system, a nonlinear oil film force model was established. It emphasised on analyzing the errors of bearing diameter and journal diameter along with its interaction effects on the dynamics, carrying capacity, stability of the hydrodynamic journal bearing system. The effects on friction power loss of the hydrodynamic journal bearing system were analyzed quantitatively based on the eccentricity corresponding to the critical speed of the stability. From the diagram, it is easy to know that the dimensional errors will have different degrees of impact on the journal bearing system, the friction power decreases as the eccentricity increases, and when the eccentricity at nearly 0. 6948 the friction power reaches to a minimum. The results provide a reliable theory for reducing the friction power loss, and the parameter design of journal bearing system rationally.