波动载荷对直齿轮微观热弹流润滑的影响

发布时间：2018-04-21 10:10

本文选题：波动载荷 + 微观形貌　；参考：《科学技术与工程》2016年11期

【摘要】：根据实测表面形貌数值拟合了一表面形貌函数,计入了波动载荷效应,考虑了表面粗糙度、时变效应和热效应,对直齿轮进行了微观热弹流润滑研究,分析了载荷波动频率和载荷波动幅值对油膜压力、膜厚和温度的影响。结果表明:低频波动载荷对压力、膜厚和最大温度影响较大,波动载荷频率较高时中心油膜压力、中心膜厚、最小膜厚和最大温度基本不受波动频率影响;较低波动频率下双齿啮合变单齿啮合瞬时的接触区中心位置的瞬态温升较大,载荷波动频率的增大引起节点接触区入口处温升减小,随着波动频率的增大节点处接触中心位置的瞬态温升增大明显;载荷波动幅值较大时,接触区中心油膜压力、中心膜厚、最小膜厚和最大温度波动幅度较大。
[Abstract]:According to the measured surface morphology, a surface morphology function is fitted, and the wave load effect is taken into account, and the surface roughness, time-varying effect and thermal effect are considered. The micro-thermoelastic hydrodynamic lubrication of spur gears is studied. The effects of load fluctuation frequency and load fluctuation amplitude on oil film pressure, film thickness and temperature are analyzed. The results show that the low frequency fluctuation load has a great influence on the pressure, film thickness and maximum temperature. When the fluctuating load frequency is higher, the center oil film pressure, the center film thickness, the minimum film thickness and the maximum temperature are not affected by the fluctuation frequency. Under the lower wave frequency, the transient temperature rise in the center of the contact zone between the two teeth meshing and the single tooth meshing is larger, and the temperature rise at the entrance of the node contact area decreases with the increase of load fluctuation frequency. With the increase of wave frequency, the transient temperature rise at the contact center increases obviously, and when the load fluctuation amplitude is large, the oil film pressure, the central film thickness, the minimum film thickness and the maximum temperature fluctuate greatly in the contact zone.
【作者单位】：深圳出入境检验检疫局工业品检测技术中心;青岛理工大学机械工程学院;
【基金】：国家自然科学基金(51175275)资助
【分类号】：TH132.41

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