黄兴保,王优强.考虑粗糙度和固体颗粒效应的直齿轮跑合瞬态热弹流润滑分析
Transient thermal elasto-hydrodynamic lubrication of spur gears in running-in process considering solid particles and surface roughness[J].计算力学学报,2016,33(2):238~244 |
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考虑粗糙度和固体颗粒效应的直齿轮跑合瞬态热弹流润滑分析
Transient thermal elasto-hydrodynamic lubrication of spur gears in running-in process considering solid particles and surface roughness |
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| 投稿时间：2014-12-15 修订日期：2015-04-04 |
| DOI：10.7511/jslx201602015 |
| 中文关键词: 直齿轮 固体颗粒 粗糙度 时变效应 热效应 |
| 英文关键词:spur gears solid particles surface roughness time-variant effect thermal effect |
| 基金项目:国家自然科学基金(51175275);青岛市科技计划(12-1-4-4-(2)-jch)资助项目. |
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| 中文摘要: |
| 建立了含有固体颗粒的弹流数学模型,修正了Reynolds方程,考虑了连续波状粗糙度的影响,对跑合过程中直齿轮轮齿啮合区的弹流润滑进行了数值解算,分析了固体颗粒和粗糙度对压力、膜厚和温度的影响。结果表明,连续波状粗糙度会引起压力和膜厚一定幅度的上下波动,考虑固体颗粒后,压力变大,膜厚减小;颗粒速度越大,膜厚越小,最小膜厚减小,最大温升一定幅度减小,颗粒所在区域的温升减小;粗糙度波长较小时,粗糙度对膜厚较小的接触区引起的温升较大。 |
| 英文摘要: |
| The elasto-hydrodynamic mathematical model considering solid particles was established and Reynolds equation was revised.Numerical solutions of elasto-hydrodynamic lubrication in meshing region of spur gear teeth considering continuous wave roughness were calculated.The influences of solid particles and surface roughness on oil film pressure,film thickness and oil temperature were analyzed.Results show that continuous wave roughness may cause a certain range of fluctuation to film pressure and film thickness.Taking solid particles into account the film pressure increases and film thickness decreases.If velocity of solid particles becomes greater,film thickness may be thinner,the minimum film thickness diminishes,the maximum temperature rise may decrease to some extent,temperature rise in the region containing solid particles may diminish.When surface roughness wave length value is small,temperature rise in contact areas where film thickness is quite thin may be liable to be great. |
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