变速箱齿轮多工况疲劳寿命分析  

Fatigue Life Analysis of Transmission Gear under Multiple Working Conditions

作　　者：王玉 李丽君[1] 孙弘毅 李敏 孟德世 Wang Yu;Li Lijun;Sun Hongyi;Li Min;Meng Deshi(School of Transportation and Vehicle Engineering,Shandong University of Technology,Zibo 255000,China)

机构地区：[1]山东理工大学交通与车辆工程学院,山东淄博255000

出　　处：《煤矿机械》2021年第12期75-78,共4页Coal Mine Machinery

摘　　要：针对传动系统齿轮在长期交变循环应力下易发生疲劳失效的问题,以某变速箱三挡齿轮副为研究对象,通过仿真软件ANSYS Workbench对不同工况下的齿轮进行应力分析,基于齿轮材料的S-N曲线及载荷谱,结合疲劳累积损伤理论,建立了多工况组合疲劳分析模型。根据ISO 6336国际标准基于载荷谱对变载荷条件下的齿轮进行了强度校核与疲劳寿命计算。结果表明:最小疲劳寿命出现在轮齿接触面处;对比疲劳寿命计算结果,两者计算结果较为吻合,验证了模型的准确性。该研究为变速箱齿轮的抗疲劳设计提供了理论依据。Aiming at the problem that the gear of transmission system is prone to fatigue failure under long-term alternating cyclic stress, a third gear pair of a transmission was taken as the research object.The stresses of the gear pair under different working conditions were analyzed by simulation software ANSYS Workbench. Based on the S-N curve of gear materials and load spectrum, combined with the fatigue damage cumulative theory, a multi-working condition combined fatigue analysis model was established. According to ISO 6336 international standard, the strength check and fatigue life calculation of gear under variable load condition were carried out based on load spectrum. The results show that the minimum fatigue life appears at the tooth contact surface. Compared with the fatigue life calculation results, the two calculated results are in good agreement, which verifies the accuracy of the model. The research provides a theoretical basis for anti-fatigue design of transmission gear.

关 键 词：载荷谱 变速箱齿轮 有限元分析 强度 疲劳寿命 

分 类 号：TH132.41[机械工程—机械制造及自动化]