计及表面变形的轴向柱塞泵滑靴副热流体动力润滑分析  

Thermohydrodynamic Lubrication Analysis of Slipper Pair in Axial Piston Pump Considering Surface Deformation

作　　者：汤何胜[1] 訚耀保[2] 李晶[2] 王智勇[2] TANG Hesheng YIN Yaobao LI Jing WANG Zhiyong(College o f Mechanical Engineering, Wenzhou University, Wenzhou 325035 College of Mechanical Engineering, Tongji University, Shanghai 200092)

机构地区：[1]温州大学机电工程学院,温州325035 [2]同济大学机械工程与能源学院,上海200092

出　　处：《机械工程学报》2017年第4期168-176,共9页Journal of Mechanical Engineering

基　　金：国家自然科学基金(51475332;51275356);浙江省自然科学青年基金(LQ17E050003)资助项目

摘　　要：考虑热变形和弹性变形等影响因素,对倾覆状态下滑靴副热流体动力润滑性能进行研究,主要分析讨论不同柱塞腔压力、主轴转速和进口油液温度等工况下热变形和弹性变形对滑靴副热流体动力润滑性能的影响。采用有限差分法联立求解雷诺方程和油膜厚度方程进行滑靴副油膜润滑分析,采用有限单元法计算滑靴表面变形,采用能量方程和热传导方程计算油膜温度。结果表明,计及热变形和弹性形变时,油膜压力和油膜厚度场在滑靴中心油室和边缘处出现凸起峰值;油膜温度场沿滑靴半径方向由内向外递减分布;柱塞腔压力越大,主轴转速和进油口温度越高,油膜厚度的振荡衰减特征越明显,摩擦转矩随油膜厚度减小而增大,处于柱塞泵的吸排油交替区时的油膜厚度和摩擦转矩出现峰值。The thermohydrodynamic lubrication properties of overturning slipper pair considering elastic deformation and thermal deformation are studied. The effect of thermal deformation and elastic deformation of slipper surface on the thermoehydrodynamic lubrication of slipper pair under work conditions of different load pressure, shaft speed and inlet temperature is discussed mainly. The lubrication properties of slipper pair is analyzed by using Reynolds equation and film thickness equation based finite difference method. The slipper deformation is calculated by finite element method. The film temperature distribution is calculated by energy equation and heat conduction equation. The results show that there is a convex shape of oil film temperature and pressure distribution in slipper pocket and edge. Oil film temperature cross slipper radius decreases from the slipper pocket to the edge of slipper. The high shaft speed, load pressure and inlet temperature are, the more obvious damped oscillation of oil thickness will be. The fiction torque increases with decreasing oil film thickness. The peaks of fiction torque and oil film thickness exist at the high-pressure and low-pressure alternate region of piston pump.

关 键 词：轴向柱塞泵 滑靴 表面变形 热流体动力润滑 

分 类 号：TH137[机械工程—机械制造及自动化]