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基于剪切稀化流变模型,对航天润滑油线接触弹流润滑问题进行了完全数值分析,得到了考虑剪切稀化效应的航天润滑油弹流油膜厚度修正系数公式.在较宽工况下,将修正系数公式修正后的油膜厚度与实测油膜厚度以及理论分析得到的油膜厚度进行比较,结果表明,弹流油膜厚度修正系数公式具有较高的精度.在实际工程应用中,用修正系数乘以牛顿流体油膜厚度可以非常方便地得到实际弹流油膜厚度值.
Based on the shear-thinning rheological model, the full-scale numerical analysis of the contact lubrication problem of aerospace lubricating oil line was carried out, and the correction formula of the oil film thickness of aerospace lubricating oil flow considering shear thinning effect was obtained. , The revised film thickness of the correction formula and the measured film thickness and the theoretical analysis of the film thickness are compared, the results show that the formula of the correction coefficient of the oil film thickness has a higher accuracy.In practical engineering applications, with a correction factor Multiply by the Newtonian fluid film thickness can be very easy to get the actual value of the oil film thickness.