时变摩擦因数对齿面接触疲劳寿命的影响研究  

Effect of Time-varying Friction Factors on the Contact Fatigue Life of Gears

作　　者：李学飞 李纪强 陈卓 李志远 师陆冰 刘忠明 Li Xuefei;Li Jiqiang;Chen Zhuo;Li Zhiyuan;Shi Lubing;Liu Zhongming(Zhengzhou Research Institute of Mechanical Engineering Co.,Ltd.,Zhengzhou 450001,China;Shaanxi Fast Gear Co.,Ltd.,Xi'an 710119,China;ZRIME Gearing Technology Co.,Ltd.,Zhengzhou 450001,China)

机构地区：[1]郑州机械研究所有限公司,河南郑州450001 [2]陕西法士特齿轮有限责任公司,陕西西安710119 [3]郑机所(郑州)传动科技有限公司,河南郑州450001

出　　处：《机械传动》2023年第5期19-25,共7页Journal of Mechanical Transmission

基　　金：国家重点研发计划项目(2020YFB2007002);中国博士后科学基金项目(2021M692951);中国机械科学总院集团有限公司技术发展基金项目(AZXJJ1082105)。

摘　　要：齿面摩擦力对齿面接触应力和接触疲劳寿命有着重要的影响。在对齿面接触疲劳寿命预估时,常忽略齿面摩擦力的影响,不利于齿面接触疲劳寿命的准确预估。为了准确预估齿面接触疲劳寿命,根据18CrNiMo7-6齿轮材料的齿面接触疲劳试验数据,基于三参数威布尔分布和名义应力法对R-S-N曲线进行拟合,在齿面接触应力的计算中引入时变摩擦因数,分析了时变摩擦因数对齿面接触疲劳寿命的影响,并通过齿面接触疲劳试验进行了验证。结果表明,由于时变摩擦因数的影响,采用传统的名义应力法所估计的齿面接触疲劳极限偏大,且随着应力的增大,摩擦因数对齿面接触疲劳寿命的影响呈减弱趋势。The tooth surface friction has an important impact on the tooth surface contact stress and the tooth surface contact fatigue life.In the estimation of the contact fatigue life of the tooth surface,the influence of the friction force of the tooth surface is often ignored,which is not conducive to the accurate prediction of the contact fatigue life of the tooth surface.In order to accurately predict the contact fatigue life of the tooth surface,the R-S-N curves are fitted based on the three-parameter Weibull distribution and the nominal stress method according to the tooth surface contact fatigue test data of 18CrNiMo7-6 gear material.By calculating the contact stress on the tooth surface,the time-varying friction factor is introduced,and the influence of the time-varying friction factor on the contact fatigue life of the tooth surface is analyzed.Finally,the tooth surface contact fatigue test is used to verify the validity.The results show that the contact fatigue limit of tooth surface estimated by the traditional nominal stress method is large due to the influence of the time-varying friction factor,and the influence of the friction factor on contact fatigue life of tooth surfaces decreases with the increase of stress.

关 键 词：R-S-N 曲线 威布尔分布 摩擦因数 接触疲劳寿命 齿轮传动 

分 类 号：TH132.41[机械工程—机械制造及自动化]