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采用弹性流体动力润滑理论和部分弹性流体动力润滑理论的分析方法,对弹流及部分弹流润滑线接触问题进行数值求解。通过联立求解结果,分析了接触表面间油膜厚度随载荷、滚动速度、滑滚比和进油温度等因素的变化规律,获得不同工况条件下的油膜厚度值,并依此提出一种新的油膜厚度公式。新公式考虑了热效应及表面粗糙效应影响,可用于高温、高速、重载工况。计算结果比Dowson-Higginson油膜厚度公式更符合于实验数据。
Based on the theory of elastic fluid dynamic lubrication and the theory of partial elastic fluid dynamic lubrication, the contact problems between the elastic flow and some of the elastohydrodynamic lubrication lines are numerically solved. Through the joint solution, the change rules of oil film thickness between contact surfaces with load, rolling speed, slippage ratio and oil inlet temperature were analyzed, and the oil film thickness under different working conditions was obtained, and a new The film thickness formula. The new formula takes into account the effects of thermal effects and surface roughness, can be used for high temperature, high speed, heavy load conditions. The calculated results are more in line with the experimental data than the Dowson-Higginson film thickness formula.