汽车工程 ›› 2024, Vol. 46 ›› Issue (4): 725-734.doi: 10.19562/j.chinasae.qcgc.2024.04.018

• • 上一篇    

考虑制造误差和油膜作用力的齿轮敲击动力学分析

石晓辉1(),周益2,3,徐辉辉3,郭栋1,梅自元3,崔学芳2   

  1. 1.重庆理工大学,汽车零部件先进制造技术教育部重点实验室,重庆 400054
    2.重庆大学机械与运载工程学院,重庆 400044
    3.麦格纳动力总成(江西)有限公司产品工程部,南昌 330013
  • 收稿日期:2023-09-20 修回日期:2023-10-12 出版日期:2024-04-25 发布日期:2024-04-24
  • 通讯作者: 石晓辉 E-mail:shixiaohui@cqut.edu.cn
  • 基金资助:
    国家自然科学基金(51975080);国家留学基金委项目(202106050063);江西省重点研发计划项目(20202BBE53007)

Gear Rattle Dynamic Analysis Considering Manufacturing Error and Oil Film Force

Xiaohui Shi1(),Yi Zhou2,3,Huihui Xu3,Dong Guo1,Ziyuan Mei3,Xuefang Cui2   

  1. 1.Chongqing University of Technology, Key Laboratory of Advanced Manufacturing Technology for Automobiles Parts, Ministry of Education, Chongqing  400054
    2.College of Mechanical and Vehicle Engineering, Chongqing University, Chongqing  400044
    3.Product Engineering, Magna PT Powertrain (Jiangxi) Co. , Ltd. , Nanchang  330013
  • Received:2023-09-20 Revised:2023-10-12 Online:2024-04-25 Published:2024-04-24
  • Contact: Xiaohui Shi E-mail:shixiaohui@cqut.edu.cn

摘要:

为准确评估变速器空套齿轮受角加速度激励的敲击表现,采用集中参数法建立了模拟变速器敲击台架试验的10自由度扭转动力学模型;在包含时变啮合刚度、间隙非线性和拖曳力矩的基础上,进一步考虑齿轮制造误差和润滑油膜作用力。敲击台架试验结果表明包含楔入和挤压效应的润滑油膜作用力模型能正确反映变速器的敲击响应;数值分析结果表明润滑油膜可以减少制造误差位移激励和时变啮合刚度参数激励产生的齿面敲击,敲击强度随制造误差幅值的增加呈凹函数变化,当制造误差的幅值增加到某一数值时,齿轮副在无角加速度激励时亦产生敲击现象。润滑油温度对敲击的影响与角加速度激励有关:无角加速度激励时,低温时较低幅值的齿轮低频圆周误差通过改变油膜作用力方向产生敲击;油膜作用力产生的敲击响应频率比齿面接触的敲击响应频率更低;当存在角加速度激励时,敲击强度随温度的升高呈凸函数增加。

关键词: 空套齿轮, 齿轮敲击, 制造误差, 油膜作用力

Abstract:

In order to accurately evaluate the rattle performance of the gearbox unloaded gear under angular acceleration excitation, a ten-degree-of-freedom torsional dynamic model for the dual-clutch transmission rattle bench test is established using the lumped parameter method. Based on consideration of the contact time varying mesh stiffness, backlash nonlinearities and drag torque, the gear manufacturing error and the oil film induced-force are further considered. Bench test results show that the oil film induced-force model containing oil film entraining and squeeze effects can correctly simulate the transmission rattle response. Numerical analysis results show that lubricant film can reduce the mesh impact induced by the error-induced displacement excitation and time-varying mesh stiffness parametric excitation. The gear rattle intensity increases with the increase of manufacturing error amplitude, and when the error amplitude increases to a certain value, the gear pair produces rattle phenomenon with null angular acceleration as well. The influence of oil temperature on gear rattle is related to the angular acceleration excitation. When there is no angular acceleration excitation, the low-frequency circumferential error with low-amplitude at low-temperature changes the direction of the oil film force and hence produce gear rattle. The rattle response frequency caused by oil film hydrodynamic force is lower than that generated by the structural tooth contact. The rattle intensity increases as the temperature increases in a convex function once the angular acceleration excitation is applied at transmission input shaft.

Key words: unloaded gear, gear rattle, manufacturing error, oil film induced-force