【摘要】 对螺旋槽流体动压滑动轴承进行了研究。由于圆弧形油腔斜置,为计算准确在斜坐标系下推导出了雷诺方程、油膜厚度方程和速度方程的有限差分公式。运用有限差分法,对轴承的承载力、压力和流体质点的流动轨迹等进行了数值分析,对计算结果进行了讨论。结果表明:螺旋形油楔很好地实现了冷热油的分流,避免了润滑油的反复加热,导致轴承承载力降低;偏心率和螺旋角对油膜压力有不同程度的影响。更多还原

【Abstract】 Spiral oil wedge hydrodynamic bearing was investigated theoretically.Because of spiral oil wedge,a oblique coordinate system was used to formulate the finite differential formulas of Reynolds equation,film thickness equation and velocity equation for accurate compute.By means of finite differential methods,carrying capacity,pressure,and flow trail of lubricant oil were computed,and their numerical results were analyzed.The results show that the spiral oil wedges can realize the flow separation between the hot oil and the cold oil,avoid heating oil repeatedly and conduce to the decrease of carrying capacity.Eccentricity and spiral angle have different effects on pressure.更多还原