水基磁流体滑动轴承热弹流润滑分析

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The elastohydrodynamic lubrication numerical analysis of ferrofluid journal bearings with different carrier flu- ids is carried out by using the Reynolds equation with thermal effect, and the influences of carrier fluids and volume fraction of Fe3 04 on elastohydrodynamic performance are discussed. The results show that the elastohydrodynamic tem- perature of H01 ferrofluid journal bearing is the highest, the film thickness is the thickest, and the pressure peak is the smallest ; The elastohydrodynamic temperature of E03 ferrofluid journal bearing is lowest, the film thickness is the thin- nest, and the pressure peak is the biggest; The film thickness, the pressure peak and the elastohydrodynamic tempera- ture of A01 ferrofluid journal bearing are between the two situations above - mentioned. With the increase of magnetic powder volume fraction, the film thickness is increased, the pressure has no change, and the elastohydrodynamic tem- perature continuously increases.利用考虑热效应的Reynolds方程，对不同载液磁流体滑动轴承进行热弹流润滑数值分析。探讨了载液和磁粉体积分数对磁流体滑动轴承弹流性能的影响。结果表明：酯基H01磁流体滑动轴承的压力峰最小，膜厚和弹流温度最大；烃基E03磁流体滑动轴承的压力峰最大，膜厚和弹流温度最1h；水基A01磁流体滑动轴承的压力峰、膜厚和弹流温度均在前两者之间；随着磁粉体积分数增大，水基磁流体的弹流润滑膜膜厚不断增大，压力无明显变化，弹流温度不断升高。