摘要
给出了一种利用有限元仿真软件求解航空分扭级和并车级齿轮在啮合过程中的最大接触应力和最大弯曲应力的变化情况的方法。通过不同应力计算标准计算出航空齿轮的最大接触应力与齿根处的最大弯曲应力,并与仿真结果进行比较。结果表明并车级齿轮在啮合过程中靠近轮齿端面和齿顶的地方均存在一定的边缘接触。由于边缘接触易引起应力集中,从而大大影响轮齿的接触疲劳寿命,因此这种现象应尽量避免。后续可根据仿真所得的接触应力和弯曲应力对齿轮进行疲劳寿命预测,完成技术验证性的可靠性分析。
This paper presents a method to solve the changes of maximum contact stress and maximum bending stress of aviation split-torsion and parallel gear during engagement by using finite element simulation software.The maximum contact stress and the maximum bending stress at the tooth root of the aviation gear are calculated by using different stress calculation standards, and the calculation results are compared with the simulation results.The results show that there is a certain edge contact near the tooth end and the tooth top in the engagement process of the parallel gear.The edge contact is easy to cause stress concentration, which greatly affects the contact fatigue life of the gear teeth, and should be avoided as far as possible.The fatigue life of the gear can be predicted according to the contact stress and bending stress obtained by the simulation, and the reliability of the method can be verified.
作者
刘怡
陈玲萍
LIU Yi;CHEN Lingping
出处
《现代机械》
2022年第1期70-75,共6页
Modern Machinery
基金
湖南省教育厅资助科研项目(项目编号:18C0719)。
