A mesh stiffness model with the asperity contact for spur gear in mixed elastohydrodynamic lubrication
A mesh stiffness model with the asperity contact for spur gear in mixed elastohydrodynamic lubrication
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DOI：
10.1007/s40430-022-03748-9
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发表时间：
2022-09
影响因子：
2.2
通讯作者：
Changjiang Zhou;Mingcai Xing;Bo Hu
中科院分区：
文献类型：
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作者：
Changjiang Zhou;Mingcai Xing;Bo Hu
齿轮时变啮合刚度（TVMS）计算是齿轮动力学分析的基础，对齿轮参数的优化设计有重要影响。齿轮传动通常工作在混合弹流润滑中，研究混合弹流润滑中直齿轮副的时变啮合刚度具有重要意义。在此基础上，提出了一种考虑粗糙度接触刚度和油膜刚度的混合直齿直齿轮TVMS模型。分析了齿轮几何参数和工作参数对TVMS的影响。结果表明，混合电液接触下正齿轮副的TVMS比干接触下的TVMS大。结果表明：TVMS随模量的增大而减小，随压力角的增大而增大。当小齿轮齿数与齿轮齿数接近时，齿轮TVMS变大。此外，速度和转矩的波动对混合式直齿轮的TVMS的影响可以忽略不计。
The gear time-varying mesh stiffness (TVMS) calculation is the basis for analyzing gear dynamics, which has considerable effects on the optimal design of gear parameters. Gear drives generally operate in mixed elastohydrodynamic lubrication (EHL), and it is significant to investigate the time-varying mesh stiffness for spur gear pairs in mixed EHL. In this work, a novel TVMS model for spur gear in mixed EHL is presented in consideration of asperity contact stiffness and oil film stiffness. The influences of gear geometric and operation parameters on TVMS are analyzed. The TVMS of spur gear pair in mixed EHL is found to be larger than that in dry contact. Results show that TVMS reduces with the increased module but increases with the large pressure angle. When tooth number of pinion is closer to that of gear, the gear TVMS becomes large. Moreover, the fluctuations of velocity and torque have a negligible effect on the TVMS of the spur gear in mixed EHL.