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为考察阶梯型直线槽表面织构对轴承钢端面摩擦性能的影响,设计了3种阶梯型直线槽表面织构,建立了均匀分布表面织构密封端面理论模型,利用数值模拟的方法获得了密封端面间气膜的无量纲压力分布,分析了直线槽截面形状和几何参数对平均压力pav的影响。结果表明:Q型直线槽端面比普通R型直线槽端面具有更好的动压性能;直线槽的深度决定最优深度系数和宽度系数;通过合理的选择阶梯槽参数,平均无量纲压力能达到1.602 3。
In order to investigate the influence of the surface texture of the stepped linear groove on the friction performance of the bearing steel, three kinds of stepped linear groove surface texture were designed and the theoretical model of uniform distributed surface texture sealing end surface was established. The seal was obtained by numerical simulation The non-dimensional pressure distribution of the gas film between the end faces is analyzed. The influence of the cross-sectional shape of the linear groove and the geometric parameters on the average pressure pav is analyzed. The results show that the Q type linear groove has better dynamic pressure performance than the ordinary R type linear groove. The depth of the linear groove determines the optimal depth coefficient and width coefficient. The average dimensionless pressure can be achieved through reasonable choice of the step parameters. 1.602 3.