基于疲劳试验与数值分析方法的齿根裂纹扩展规律及寿命预测研究  

Research on the Rule and Life Prediction of Tooth Root Crack Propagation based on Fatigue Experiment and Numerical Analysis Method

作　　者：张眸青 方实年[2] 蒲春雷[2] 韩洪征 马辉[3,4] 王明涛 李旭 Zhang Mouqing;Fang Shinian;Pu Chunlei;Han Hongzheng;Ma Hui;Wang Mingtao;Li Xu(School of Materials Science and Engineering,Northeastern University,Shenyang 110819,China;MCC Huatian Engineering&Technology Corporation,Nanjing 210019,China;School of Mechanical Engineering&Automation,Northeastern University,Shenyang 110819,China;Key Laboratory of Vibration and Control of Aero-Propulsion Systems of Ministry of Education,Northeastern University,Shenyang 110819,China;Key Laboratory for Anisotropy and Texture of Materials of Ministry of Education,School of Materials Science and Engineering,Northeastern University,Shenyang 110819,China;State Key Laboratory of Rolling and Automation,Northeastern University,Shenyang 110819,China)

机构地区：[1]东北大学材料科学与工程学院,辽宁沈阳110819 [2]中冶华天工程技术有限公司,江苏南京210019 [3]东北大学机械工程与自动化学院,辽宁沈阳110819 [4]东北大学航空动力装备振动及控制教育部重点实验室,辽宁沈阳110819 [5]东北大学材料科学与工程学院材料各向异性与织构教育部重点实验室,辽宁沈阳110819 [6]东北大学轧制技术及连轧自动化国家重点实验室,辽宁沈阳110819

出　　处：《机械传动》2022年第2期1-6,共6页Journal of Mechanical Transmission

基　　金：国家自然科学基金(51634002);中央高校基本科研业务专项资金(N180708009)。

摘　　要：通过疲劳试验机对带有齿根裂纹故障的变位直齿轮进行疲劳试验,得到齿根裂纹扩展规律:齿根裂纹相对于齿根方向更易于沿着齿宽方向扩展,扩展速率呈现先慢后快的趋势。采用FRANC3D仿真模拟软件,对设置了相同初始裂纹的变位直齿轮齿根裂纹进行了自动扩展分析研究,确定了裂纹扩展方向及路径。通过对比,模拟结果与试验结果是相吻合的,表明构造的仿真模型得到了疲劳试验的验证,证明了结论的可靠性。通过对齿根裂纹扩展路径及方向的研究,可以为齿轮的设计和制造提供可靠依据。在此基础上,探讨了裂纹扩展寿命的相关问题。Through the fatigue test of modified spur gear with root crack fault by fatigue testing machine,the rule of root crack propagation is obtained,the root crack is easier to expand along the direction of tooth width than the direction of tooth root,and the growth rate is slow at first and then fast.The automatic propagation of the root crack of modified spur gear with same initial crack is analyzed by using the simulation software FRANC3D,and the propagation direction and path of the crack are determined.By comparison,the simulation results are consistent with the experimental results,which shows that the constructed simulation model is verified by the fatigue test,and the reliability of the conclusion is proved.The research on the propagation path and direction of root crack can provide a reliable basis for the design and manufacture of practical gears.On the basis of this study,the related problems of crack growth life are discussed.

关 键 词：变位直齿轮 齿根 裂纹扩展 疲劳试验 数值模拟 疲劳寿命 

分 类 号：TH132.41[机械工程—机械制造及自动化]