表面粗糙度特征对齿轮接触区润滑特性的影响

发布时间：2018-02-26 00:23

本文关键词： 齿轮混合弹流粗糙表面偏度峰度　出处：《摩擦学学报》2017年02期 　论文类型：期刊论文

【摘要】：大部分工程实际粗糙表面符合非高斯分布,并对齿轮接触副润滑特性有重要影响.将渐开线齿轮啮合过程中齿面接触等效为三维无限长线接触,建立了一个可分析直齿轮和斜齿轮的混合弹流润滑计算模型;采用基于快速傅里叶变换的数值仿真方法生成给定参数的非高斯粗糙表面;运用该模型对直齿轮和斜齿轮啮合过程进行分析,求得不同表面粗糙度特征齿轮在各个啮合点的油膜厚度、接触区载荷以及接触区比例的情况.结果表明:对于标准差相等的非高斯粗糙表面,偏度值对齿轮润滑状况的影响与工况紧密相关,在润滑良好的条件下,偏度值越小润滑状况越优;润滑恶劣的条件下,偏度值越大润滑状况越优;而在各种工况下,峰度值对齿轮润滑状况的影响都表现出峰度值越大润滑状况越优的特点.
[Abstract]:The actual rough surface of most projects conforms to the non-#china_person0# distribution and has an important influence on the lubrication characteristics of the gear contact pair. The tooth surface contact in the meshing process of involute gear is equivalent to the three-dimensional infinite line contact. A computational model of hybrid elastohydrodynamic lubrication for straight gear and helical gear is established, and the non-#china_person0# rough surface with given parameters is generated by using a numerical simulation method based on fast Fourier transform (FFT). The model is used to analyze the meshing process of spur gear and helical gear, and the oil film thickness of different surface roughness characteristic gears at each meshing point is obtained. The results show that for the non-#china_person0# rough surface with equal standard deviation, the influence of deviation on the lubrication condition of gear is closely related to the working conditions. The smaller the deviation value is, the better the lubrication condition is; the greater the deviation value is, the better the lubrication condition is under the condition of bad lubrication, and the effect of kurtosis value on the lubrication condition of gear under various working conditions shows that the higher the kurtosis value, the better the lubrication condition.
【作者单位】：四川大学空天科学与工程学院;重庆大学机械传动国家重点实验室;
【基金】：国家自然科学基金项目(51435001和51405316) 国家高技术研究发展计划项目(863计划)(2015AA043001) 中央高校基本科研业务费项目(2014SCU11062)资助~~
【分类号】：TH117.2

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