机械工程

织构滑移表面对滑块轴承摩擦学性能的影响

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  • 西安交通大学 机械制造系统工程国家重点实验室,陕西 西安 710049
林起崟(1987-),男,博士生,主要从事轴承润滑及流场可视化实验研究.

收稿日期: 2012-08-23

  修回日期: 2012-10-16

  网络出版日期: 2013-02-01

基金资助

国家“973”计划项目( 2009CB724404)

Effects of Texture Slip Surface on Tribological Performances of Slider Bearing

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  • State Key Laboratory for Manufacturing Systems Engineering,Xi’an Jiaotong University,Xi’an 710049,Shaanxi,China
林起崟(1987-),男,博士生,主要从事轴承润滑及流场可视化实验研究.

Received date: 2012-08-23

  Revised date: 2012-10-16

  Online published: 2013-02-01

Supported by

国家“973”计划项目( 2009CB724404)

摘要

为了揭示表面织构对轴承摩擦学性能的影响以指导轴承微织构的优化设计,采用速度滑移边界表征表面织构宏、微观相互作用的综合效果,并将其施加到有微织构的轴承表面,研究了织构的分布位置、面积等宏观参数对滑块轴承摩擦阻力和承载能力的影响规律.分析结果表明: 表面织构可以降低轴承的摩擦阻力,且织构面积越大减阻效果越显著; 低速时减阻能力与织构分布位置无关,高速时织构越靠近出口减阻效果越好; 表面织构的分布位置对轴承承载能力的影响显著且复杂,特别是无量纲织构区域的起始点和终止点的位置; 轴承表面完全织构化将显著降低承载能力; 表面织构位于进口时可以提高承载能力,位于出口时将会降低承载能力.上述结果说明合理的表面织构设计可以有效提高轴承的摩擦学性能.

本文引用格式

林起崟 魏正英 王宁 陈渭 . 织构滑移表面对滑块轴承摩擦学性能的影响[J]. 华南理工大学学报(自然科学版), 2013 , 41(3) : 101 -107 . DOI: 10.3969/j.issn.1000-565X.2013.03.015

Abstract

In order to reveal the effects of surface texture on the tribological performances of bearings for the microtextureoptimization design,the velocity slip boundary was used to characterize the comprehensive effect of the macroscopic/microscopic interaction and was applied to bearing surfaces with controlled micro-patterns or textures.Then,the effects of such macroscopic parameters as the surface texture location and area on the friction force andthe load-carrying capacity of slider bearing were investigated. Theoretical analysis results show that surface texture,especially the texture with larger area,may decrease the friction force,that the drag reduction is independent of thelocation of surface texture at low speeds,but at high speeds is more significant when the surface texture is locatednear the outlet,that the surface texture location,especially the dimensionless locations of the starting and theending points of the textured region,significantly influences the load-carrying capacity in a complex mode,thatfully-textured surface may significantly decrease the load-carrying capacity,that a surface texture near the inlethelps to improve the load-carrying capacity,while a surface texture near the outlet may decrease the load-carryingcapacity. All these above-mentioned statements indicate that a well-designed surface texture may significantlyimprove the tribological performances of bearings.

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