杂质颗粒对油水两相润滑轧机油膜轴承弹流润滑的影响

发布时间：2018-09-03 18:53

【摘要】：以轧机油膜轴承为研究对象,建立了油水两相流的弹流润滑模型,分析了润滑液中杂质颗粒对轧机油膜轴承润滑性能的影响。结果表明:存在杂质颗粒时,杂质颗粒接触区压力增大,入口区压力及最大压力变化不大,膜厚减小;随着杂质颗粒半径的增大,入口区压力增大,颗粒接触区压力增大,最大压力减小,膜厚减小;随着杂质颗粒浓度的增加,入口区压力减小,杂质颗粒接触区压力增大,最大压力增大,膜厚减小;随着杂质颗粒流速的增加,入口区压力及最大压力变化不大,而颗粒接触区域压力增大,膜厚减小;随着油水两相流体中含水量的增加,入口区压力减小,最大压力增大,杂质颗粒接触区压力增大,膜厚增大。
[Abstract]:An elastohydrodynamic lubrication model of oil-water two-phase flow was established for rolling mill oil-film bearings. The influence of impurity particles in lubricating fluid on lubrication performance of rolling mill oil-film bearings was analyzed. The results show that when impurity particles exist, the contact pressure of impurity particles increases, the inlet pressure and maximum pressure change little, and the film thickness decreases, and with the increase of impurity particle radius, the pressure in the inlet region increases, and the pressure in the contact zone increases with the increase of impurity particle radius. The maximum pressure decreases and the film thickness decreases; with the increase of impurity particle concentration, the inlet pressure decreases, the impurity particle contact pressure increases, the maximum pressure increases and the film thickness decreases; with the increase of impurity particle velocity, The inlet pressure and maximum pressure change little, while the contact pressure increases and the film thickness decreases. With the increase of water content in the oil-water two-phase fluid, the inlet pressure decreases, the maximum pressure increases, and the impurity particle contact pressure increases. The film thickness increases.
【作者单位】：青岛理工大学机械工程学院;
【基金】：国家自然科学基金(51175275);国家自然科学基金(51575289)
【分类号】：TG333

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