夹杂物随机分布特征对齿轮接触疲劳性能的影响研究
Study on the Influence of Random Distribution of Inclusions on Gear Contact Fatigue Performance
- 机械传动 2020年44卷第9期 页码：114-121
- 作者机构：
1.中国航发中传机械有限公司， 湖南 长沙 410200
2.重庆大学 机械传动国家重点实验室， 重庆 400044
3.郑州机械研究所有限公司， 河南 郑州 450000
- 作者简介：
雷兵（1971— ），男，湖南长沙人，工程师，研究方向为机械设计。
- 基金信息：
DOI：10.16578/j.issn.1004.2539.2020.09.018
中图分类号：
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雷兵,刘怀举,张文博等.夹杂物随机分布特征对齿轮接触疲劳性能的影响研究[J].机械传动,2020,44(09):114-121.
Lei Bing,Liu Huaiju,Zhang Wenbo,et al.Study on the Influence of Random Distribution of Inclusions on Gear Contact Fatigue Performance[J].Journal of Mechanical Transmission,2020,44(09):114-121.
雷兵,刘怀举,张文博等.夹杂物随机分布特征对齿轮接触疲劳性能的影响研究[J].机械传动,2020,44(09):114-121. DOI： 10.16578/j.issn.1004.2539.2020.09.018.
Lei Bing,Liu Huaiju,Zhang Wenbo,et al.Study on the Influence of Random Distribution of Inclusions on Gear Contact Fatigue Performance[J].Journal of Mechanical Transmission,2020,44(09):114-121. DOI： 10.16578/j.issn.1004.2539.2020.09.018.
摘要
齿轮材料中存在非金属夹杂物会显著降低齿轮的接触疲劳强度，其作用机理研究可为生产质量的控制和服役性能的评价提供重要指导。为此，建立了含随机分布非金属夹杂物的齿轮副有限元接触分析模型，并基于Brown-Miller多轴疲劳准则研究了夹杂物分布特征对齿轮接触疲劳性能的影响，预测了3种不同可靠度下的齿轮接触疲劳,R-S-N,曲线。结果表明，次表面夹杂物的存在，尤其是夹杂物的聚集，会产生相当大的应力集中，并造成接触疲劳寿命的显著降低；最小疲劳寿命深度主要位于0.35,b,H,到0.75,b,H,的范围内，其统计分布与对数正态函数的符合度最高，其次为三参数威布尔分布函数；接触疲劳寿命较好地符合三参数威布尔分布。
Abstract
The existence of nonmetallic inclusions in gear materials can significantly reduce the contact fatigue strength of gears， and the research on the related mechanism can provide important guidance for the control of production quality and service evaluation. A finite element contact analysis model of gear pair with randomly distributed inclusions is established. Based on Brown-Miller multiaxial fatigue criterion， the influence of inclusion distribution characteristics on contact fatigue performance of gears is studied. The ,R-S-N, curves of gear contact fatigue under three different reliability levels are predicted. The results show that， the presence of inclusions in the subsurface， especially the aggregation of inclusions， the considerable stress concentration will occur and the contact fatigue life will be significantly reduced. The minimum fatigue life depth is mainly in the range of 0.35,b,H, to 0.75,b,H,， and the statistical distribution is the most consistent with the logarithmic normal function， followed by the three parameter Weibull distribution function. The contact fatigue life conforms to the three parameter Weibull distribution better.
关键词
夹杂物有限元仿真Brown-Miller疲劳准则R-S-N曲线
Keywords
InclusionsFinite element analysisBrown-Miller criterionR-S-N curve
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