旋滑条件下弹流润滑数值分析

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建立旋滑条件下椭圆接触弹流润滑的数学模型，用多重网格法求得该条件下的完全数值解，研究速度、载荷、偏心距和椭圆比对油膜厚度、形状和压力的影响。结果表明，偏心距较小时，油膜厚度和形状都与普通弹流有明显的不同；速度、载荷和椭圆比增加及偏心距减小，均会导致接触区两侧最小膜厚的差值增大，油膜形状的非对称性增强；速度、椭圆比增加，油膜厚度增加，接触区压力减小，载荷增加或偏心距减小，油膜厚度减小，接触区压力增加。 Complete numerical solution to the mathematical model ot elliptical contact elastonyaroaynamic mnncatlon （EHL） established under spin-slide conditions was obtained with a muti-grid method. The influence of the velocity, load, eccentricity and elliptical ratio on film thickness, shape and pressure was investigated. The results show that when the ec- centricity span is quite small,the oil film thickness and shape are all obviously different than that of elastohydrodynamic one ; the difference value of the least film thickness on both sides of contact area is enlarged and the unsymmetry of oil film shape increased, which are all caused by decreasing at eccentricity span and increasing at velocity, load and elliptical ratio. The oil film thickness is increased and pressure of contact area decreased at increasing of velocity and elliptical ratio, and the oil film thickness is decreased and pressure of contact area increased at increasing of load or decreasing of eccen- tricity span.