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本文提出了一种在外加电压和外加反向阶梯形分布磁场作用下、润滑膜厚度沿周向变化的环状磁流体推力轴承。並引入损耗系数的概念代替摩擦系数。计算结果表明:在反向阶梯形磁场下,哈特曼数增大对提高负载能力很有效,而且能明显地降低损耗;增加润滑液的进口压力,也能明显地提高轴承的负载能力,並可以有较小的损耗;提高外加电压时,虽可获得很高的负载能力,但损耗很大。
In this paper, an annular magnetic-fluid thrust bearing with varying thickness of lubricant film in the circumferential direction under the applied voltage and applied reversely distributed magnetic field is proposed. And introduces the concept of loss coefficient instead of friction coefficient. The calculation results show that the Hartmann number increase is effective in increasing the load capacity and significantly reduces the loss in the reverse step magnetic field. Increasing the inlet pressure of the lubricating fluid can obviously improve the bearing capacity and Can have smaller loss; While raising the applied voltage, although can obtain very high load capacity, but loss is very big.