非均布变包角可倾瓦轴承性能分析

为满足重载、低速等超常运行工况对可倾瓦轴承的需求，提出了非均布变包角可倾瓦轴承结构。建立了非均布变包角径向可倾瓦轴承的流体动力润滑模型，包括轴承油膜厚度方程、Reynolds方程、能量方程、粘温方程以及瓦块热传导方程和瓦块力矩平衡方程。采用数值方法，求解获得了非均布变包角径向可倾瓦轴承的静态特性，分析了瓦块支点位置分布和瓦块包角大小对轴承润滑性能影响。研究结果表明轴承在较小的支点夹角下承载能力较高；小包角的可倾瓦轴承的最小油膜厚度较小，但其最大油膜压力会有所降低。

Research on the performance of the non-uniform change pad-angle tilting-pad bearing

To meet the heavy load, low-speed and other abnormal operating conditions demand for the tilting-pad bear-ing, a non-uniform change pad-angle tilting-pad bearing is presented. The hydrodynamic lubrication model for the tilting-pad bearing is established, which includes the oil film thickness equation, Reynolds equation, energy equation, viscosity-temper-ature equation, heat conduction equation and pad tilting torque balance equation. With numerical methods, the model is solved and the static characteristics of the tilting-pad bearing are obtained. The influences of the distribution location of pad pivot and the tilting pad-angle on the lubrication performances of the bearing are studied in detail. The results show that, the smaller bearing pivot angle, the higher the bearing capacity;the minimum film thickness decreases as the tilting pad-angle decreasing, but the maximum film pressure also decreases.