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论文类型：期刊论文

发表时间：2008-01-01

发表刊物：INDUSTRIAL LUBRICATION AND TRIBOLOGY

收录刊物：SCIE、EI、Scopus

卷号：60

期号：6

页面范围：293-298

ISSN号：0036-8792

关键字：Bearings; Fluid mechanics; Friction

摘要：Purpose - The aim of this paper is to propose a design idea for an infinite journal bearing with the optimized slip zone on the bearing sleeve surface.
   Design/methodology/approach - The approach is to use finite element analysis and the quadratic programming algorithm to study the performance of the journal bearing with a slip zone on the sleeve surface. The fluid film pressure and slip velocity can be obtained in one solution step.
   Findings - A journal bearing with a slip zone on the sleeve surface produces many different advantages over the traditional journal bearing. Even in a parallel sliding gap there is still a considerable large load support, but a very low friction drag. The effect of the enhancement of such a slip wedge on the journal bearing performance is much greater at a small eccentricity ratio than at a large eccentricity ratio. Numerical analyses indicate that the location and size of the slip zone greatly affect the journal performance. When the eccentricity ratio epsilon = 0.8, the maximum load support is increased by similar to 19 per cent and surface friction coefficients reduced by similar to 35 per cent and similar to 42 per cent at shaft and sleeve surfaces, respectively.
   Originality/value - The paper shows how the present concept can be used to design not only a journal bearing but also a thrust bearing with a slip wedge.