基于CFD的沟槽-织构复合型滑动轴承性能分析

发布时间：2018-01-31 00:05

本文关键词： 径向滑动轴承沟槽-织构复合型承载力摩擦力　出处：《润滑与密封》2017年07期 　论文类型：期刊论文

【摘要】：为进一步提高滑动轴承的承载力以满足大功率滑动轴承的设计要求,在织构型滑动轴承上增加浅沟槽,提出沟槽-织构复合型滑动轴承结构;建立沟槽-织构复合型滑动轴承性能数值分析模型,通过CFD数值仿真研究沟槽结构参数对织构型滑动轴承承载能力和摩擦特性的影响。结果表明:采用沟槽-织构复合形式可进一步提升轴承的承载力及综合性能;在织构参数一定的情况下,沟槽尺寸和分布形式对轴承性能有很大影响,当沟槽布置在织构上游区、沟槽轴向边长大于周向边长时有利于提高轴承的综合性能;在一定的使用条件下,合理设计沟槽深度、沟槽长宽比及周向布置区域大小,不仅能够有效提高轴承的承载力,而且能够减小轴承的摩擦力和端泄量,进一步改善滑动轴承的性能。
[Abstract]:In order to further improve the bearing capacity of sliding bearings to meet the design requirements of high-power sliding bearings, shallow grooves are added to the textured plain bearings, and the structure of groove texture composite sliding bearings is put forward. A numerical analysis model of groove texture composite sliding bearing is established. The influence of groove structure parameters on bearing capacity and friction characteristics of textured sliding bearings is studied by CFD numerical simulation. The bearing capacity and comprehensive performance of bearing can be further improved by adopting the composite form of groove-texture. When the texture parameters are constant, the groove size and distribution have great influence on the bearing performance. When the grooves are arranged in the upstream region of texture, the axial side length of the groove is larger than the circumferential side length, and the comprehensive performance of the bearing is improved. Under certain operating conditions, the rational design of groove depth, groove aspect ratio and circumferential layout area size can not only effectively improve bearing capacity, but also reduce the friction force and end discharge of bearing. Further improve the performance of sliding bearings.
【作者单位】：西北工业大学机电学院;
【基金】：航空科学基金项目(20140453)
【分类号】：TH133.31
【正文快照】： 航空航天等机械传动系统对高性能滑动轴承的设计需求日益迫切,如齿轮传动风扇(Geared Turbo Fan,GTF)发动机中的行星轮滑动轴承就是一项核心技术,其高承载力要求、高速工作条件和相对狭小的尺寸空间,对滑动轴承的工作性能提出了很高要求。为了在有限的设计空间内提高轴承的承

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