华南理工大学学报(自然科学版) ›› 2018, Vol. 46 ›› Issue (2): 22-30.doi: 10.3969/j.issn.1000-565X.2018.02.004

• 机械工程 • 上一篇    下一篇

混合润滑下齿面磨损预测研究及试验验证

张建阁 刘少军 方特   

  1.  中南大学 机电工程学院∥高性能复杂制造国家重点实验室,湖南 长沙 410083
  • 收稿日期:2017-06-20 修回日期:2017-11-08 出版日期:2018-02-25 发布日期:2018-01-02
  • 通信作者: 张建阁( 1989-) ,男,博士,主要从事直升飞机润滑系统热分析与疲劳寿命研究 E-mail:huaxueyue@yeah.net
  • 作者简介:张建阁( 1989-) ,男,博士,主要从事直升飞机润滑系统热分析与疲劳寿命研究
  • 基金资助:
    总装备部国防预研基金资助项目( 8130208) 

Prediction of Gear Wear Rate in Mixed Lubrication and Experimental Verification
 

 ZHANG Jiange LIU Shaojun FANG Te    

  1.   School of Mechanical and Electrical Engineering∥State Key Laboratory for High Performance Complex Manufacturing, Central South University,Changsha 410083,Hunan,China
  • Received:2017-06-20 Revised:2017-11-08 Online:2018-02-25 Published:2018-01-02
  • Contact: 张建阁( 1989-) ,男,博士,主要从事直升飞机润滑系统热分析与疲劳寿命研究 E-mail:huaxueyue@yeah.net
  • About author:张建阁( 1989-) ,男,博士,主要从事直升飞机润滑系统热分析与疲劳寿命研究
  • Supported by:
     Supported by the Assembly Research Foundation( 8130208) 

摘要: 高速重载齿轮常常运行在混合润滑状态,粗糙齿面存在着较大的摩擦和极高的 闪现温度,继而产生较高的能量损耗,并加速接触表面磨损失效进程. 为准确预测混合润 滑条件下的齿面磨损率,提出了一种新的磨损分析模型,使其能够在微观尺寸上对混合润 滑区域的磨损过程进行准确的描述. 在磨损分析之前,考虑了接触区域存在的热 -弹 -流 耦合现象,建立了齿面磨损计算的数学模型,给出了计算模型中各参数的确定方法,并讨 论了其适用范围. 研究了一定工况下直齿轮齿面的接触情况、应力分布、闪现温升、润滑状 态、摩擦以及磨损趋势,结果发现:齿面磨损受到多重因素的影响,其在齿面的分布也是非 线性的;接触区域的温升会极大地改变混合润滑区域的润滑与摩擦界面;同时粗糙峰接触 效应造成了较大的且剧烈波动的局部磨损率,加剧了齿面磨损程度. 磨损率的预测结果与 齿轮磨损试验的测量数据较为一致,表明文中所得模型可为齿轮的传动设计以及实际工 程应用提供依据. 

关键词: 直齿轮, 混合润滑, 粗糙峰接触, 摩擦, 闪温, 表面磨损 

Abstract:

 Gears with highspeed and heavyload always run in mixed lubricating conditions. Rough surfaces of gears experience heavy friction and high flash temperature,resulting in larger energy loss and accelerating surface wear failure. In order to predict tooth wear rate accurately under mixed lubricating conditions,a new wear analysis model is proposed so that it can accurately describe the process of wear in mixed lubricating area in a microscopic dimension. Before the implementation of wear analysis program, the effect is considered of a coupling thermo-elasto-hydrodynamic phenomenon in the contact area. Methods in the mathematical model of tooth wear have been pro
posed to decide parameters in the model and its application range is discussed. By studying the performance of spur gears in terms of contact situation,pressure distribution,rise of flash temperature,lubricating state,friction and wear trend, it is revealed that the tooth surface wear is affected by miscellaneous factors,and its distribution on the tooth surface is also nonlinear. The temperature rise will greatly change the lubrication and friction interface in the mixed lubricating state. At the same time,asperity contact effects bring about a larger local wear rate and violent fluctuation,and further exacerbate wear degree of the tooth surface. Finally,comparison between the prediction wear depth and the experimental measurements indicates close congruity. The verification of the gear wear test indi
cates that the prediction model can provide evidence for gear design and engineering application. 

Key words: spur gears, mixed lubrication, asperity contact, friction, flash temperature, surface wear 

中图分类号: