Elastohydrodynamic Lubrication of Air-Lubricated Rollers
Elastohydrodynamic Lubrication of Air-Lubricated Rollers
复制标题
空气润滑滚轮的弹流润滑
DOI：
10.1115/1.2831582
复制
发表时间：
1996
影响因子：
2.5
通讯作者：
J. J. Shelton
中科院分区：
文献类型：
--
作者：
Y. B. Chang;F. Chambers;J. J. Shelton
对紧密接触的两个旋转滚子间的润滑气膜进行了数值研究。数值模型考虑了空气的可压缩性、材料变形以及气膜厚度不大于空气分子平均自由程时产生的滑移流的影响。计算了滚子间夹紧区的气膜分布和压力分布。结果表明，计算得到的气膜厚度低于液体弹流计算的预测值。通过本研究，得到了最小气膜厚度、接触中心气膜厚度和通过压区的气量的计算公式。该研究可应用于卷绕辊卷绕风量的预测。
The lubricating air film between two rotating rollers in close contact was studied numerically. The numerical model used in this study accounts for the effects of air compressibility, material deformation, and the slip flow which occurs when the air film thickness is not much larger than the mean-free-path of the air molecules. The air film profiles and the pressure profiles for the nip region between the rollers were calculated. It was found that the calculated air film thicknesses are lower than predicted by the liquid elastohydrodynamic calculation. From this study, equations for the minimum air film thickness, the air film thickness at the center of contact, and the amount of air that passes through the nip were obtained. This study has application to the prediction of the amount of air entrained in a winding roll.