非晶态薄带冷却铜辊用内反馈静压轴承数值模拟

由于内反馈式静压轴承具有高回转精度、大承载能力和高油膜刚度等特性，固将其引入到非晶态薄带冷却铜辊支承结构中。为了获取冷却铜辊用内反馈静压轴承的承载能力特性，利用流体力学软件建立不同偏心距下的内反馈式静压轴承油膜模型，研究不同进油压力下随偏心距变化时轴承油膜压力场分布情况并计算出其承载能力。结果表明：在同等进油压力下，油膜承载能力随偏心距的增大而增大；在同等偏心距下，油膜承载能力随进油压力的增大而增大。最终通过与工作现场实验数据比对分析，当进油压力分别为3.0 MPa和3.5 MPa时，数值模拟载荷值与实际载荷值的相对误差分别为5.3%和5.4%，证明了数值模拟结果的可靠性。

Numerical Simulation of Hydrostatic Bearing with Self-controlled Restrictor Employing Cooling Roll in Amorphous Alloy Ribbon Formation

Hydrostatic bearings with self-controlled restrictors are used for cooling roll support structures in amorphous alloy ribbon formation due to their large load capacity, high bearing stiffness and low friction characteristics. The finite volume method is used to compute the three-dimensional fluid pressure field of the bearing models of different eccentricities to obtain the bearing characteristics. This study analyzes theoretically the influence of different eccentricities on bearing performance according to computational fluid dynamics. The simulation results demonstrate that the load capacity of the bearing increases gradually with the increase of eccentricity at the same supplied pressure. And the increase of supplied pressure results in the enlargement of the load capacity with the same eccentricity. In comparison with the real value of the load, the relative errors of simulation data are respectively 5.3% and 5.4% with the supplied pressure of 3.0 MPa and 3.5 MPa. Through this study, the validity of the numerical simulation of hydrostatic bearings is verified.