论文部分内容阅读
目的某型发动机转子系统直接采用JP-10燃料对传动部件进行润滑,但燃料润滑的可靠性是限制其应用的瓶颈技术之一,因此拟研究传动部件在JP-10介质中的润滑状态。方法建立点接触部分膜弹流模型,模型以弹流润滑理论与弹性固体接触理论为基础,应用有限差分法进行完全数值求解。通过比较在JP-10、航空润滑油4050和4109介质中,油膜厚度、油膜压力及粗糙接触压力的分布,分析了JP-10的润滑性能。结果 JP-10形成的油膜厚度与压力均小于另外两种润滑油,JP-10介质中的粗糙接触压力远大于另外两种润滑油中的粗糙接触压力。结论 JP-10的润滑性能比常用的航空润滑油弱,其润滑可靠性较低,需要采取先进表面加工技术对传动部件间的接触表面进行防护,同时在合理范围内提高流体卷吸速度,提高表面加工质量,有利于流体润滑膜的形成。
Purpose An engine rotor system uses JP-10 fuel directly to lubricate transmission components. However, the reliability of fuel lubrication is one of the bottleneck technologies that limit its application. Therefore, it is proposed to study the lubrication of transmission components in JP-10 medium. Methods The model of point contact membrane elastic flow was established. Based on the theory of elastohydrodynamic lubrication and the theory of elastic solid contact, the model was solved numerically by finite difference method. The lubricating properties of JP-10 were analyzed by comparing the distribution of oil film thickness, oil film pressure and rough contact pressure in JP-10, aviation lubricants 4050 and 4109. As a result, the thickness and pressure of the oil film formed by JP-10 were both smaller than those of the other two lubricants. The rough contact pressure in JP-10 medium was much larger than the rough contact pressure in the other two lubricating oils. Conclusions JP-10 has weaker lubricating properties than common aviation lubricants and low lubrication reliability. Advanced surface processing techniques are required to protect the contact surfaces between transmission components and to increase the entrainment speed of fluid within a reasonable range to improve Surface processing quality, is conducive to the formation of fluid lubrication film.