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Effects of bushing profiles on the elastohydrodynamic lubrication performance of the journal bearing under steady operating conditions

机译：轴套曲线对稳态运行条件下轴颈弹性流动性润滑性能的影响

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摘要

The bushing profiles have important effects on the performance of journal bearing. In this article, the effects of plain profile, double conical profile, and double parabolic profile on the elastohydrodynamic lubrication of the journal bearing under steady operating conditions are investigated. The journal misalignment and asperity contact between journal and bushing surface are considered, while the modification of the bushing profiles due to running-in is neglected. Finite element method is used for the elastic deformation of bushing surface, while the numerical solution is established by using finite difference method and overrelaxation iterative method. The numerical results reveal that the double parabolic profile with appropriate size can significantly increase the minimum film thickness and reduce the asperity contact pressure and friction, while the maximum film pressure, load-carrying capacity, and leakage flow rate change slightly under steady operating conditions. This study may help to reduce the edge wear and prolong the service life of the journal bearing.
机译：衬套型材对轴颈轴承的性能具有重要影响。在本文中，研究了普通型材，双锥形轮廓和双抛物面型在稳定操作条件下对轴颈轴承弹性流体动力学润滑的影响。考虑轴颈和衬套表面之间的辉示和粗糙接触，同时忽略了由于延时引起的衬套轮廓的修改。有限元方法用于衬套表面的弹性变形，而通过使用有限差分法和超出迭代方法建立数值溶液。数值结果表明，具有适当尺寸的双抛物型轮廓可以显着增加最小膜厚度并降低粗糙接触压力和摩擦，而最大薄膜压力，承载能力和泄漏流速在稳定的操作条件下略微发生变化。本研究可能有助于降低边缘磨损并延长日志轴承的使用寿命。

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