Abstract

In this study, a modified wear model considering contact temperature for spur gears in mixed elastohydrodynamic lubrication (EHL) is proposed. The contact temperature consists of bulk temperature and flash temperature. The bulk temperature is determined by the thermal network model, whereas the flash temperature is estimated through the published method. The bulk temperature, which was rarely included in the previous works, substantially has a considerable influence on the tooth wear in mixed EHL. It is also found that the lower contact temperature contributes to the reduction of gear wear depth. Furthermore, the effects of gear basic geometrical parameter and operating parameter on wear depth are investigated. The results show that the wear depth decreases with the increased tooth width, module, pressure angle and rotational velocity but increases with the surface roughness and torque. It indicates that wear resistance of tooth surfaces can be enhanced by optimising the design parameters of gear drives.

Graphic Abstract

中文翻译：

---

混合弹性流体动力润滑中考虑正齿轮接触温度的修正磨损模型

摘要

在这项研究中，提出了一种在混合弹性流体动力润滑（EHL）中考虑正齿轮接触温度的改进磨损模型。接触温度由本体温度和闪蒸温度组成。整体温度由热网络模型确定，而闪蒸温度通过公开的方法估算。在以前的工作中很少包括的体温对混合EHL中的牙齿磨损有相当大的影响。还发现较低的接触温度有助于减小齿轮磨损深度。此外，研究了齿轮基本几何参数和工作参数对磨损深度的影响。结果表明，随着齿宽，模数的增加，磨损深度减小。压力角和旋转速度随表面粗糙度和扭矩而增加。这表明通过优化齿轮传动的设计参数可以提高齿面的耐磨性。

图形摘要