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首页> 外文期刊>Advanced Science, Engineering and Medicine >New Film Thickness Equation for Elastohydrodynamic Lubrication of Isothermal Smooth Line Contacts Under Heavy Loads for Newtonian Fluids
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New Film Thickness Equation for Elastohydrodynamic Lubrication of Isothermal Smooth Line Contacts Under Heavy Loads for Newtonian Fluids

机译：用于牛顿液负荷下等温光滑线触点的弹性流动动力学润滑的新薄膜厚度方程

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摘要

A new equation is proposed for predicting the film thickness at the Hertzian contact center in elastohydrodynamic lubrication (EHL) of isothermal smooth line contacts under heavy loads when the fluid is Newtonian. Results show that this film thickness equation has a satisfactory prediction precision for the dimensionless load to film thickness ratio W/H_c ranging from 0.01 to 200, especially when the load is heavy. In the heavy load condition, it has a much higher prediction precision than the Grubin formula and the Dowson-Higginson formula, both of which much overestimates the central EHL film thickness even in the magnitude of 1 to 2 orders. The maximum prediction error of the present film thickness equation is examined to be about 40% in the investigated wide range of the parameter value W/H_c. It gives that the present film thickness equation reaches application value for heavy loads, which is unable to be accommodated by the previous EHL film thickness formula.
机译：提出了一种新的等式，用于预测在流体是牛顿时，在重负载下的等温平滑线接触中的弹性流体动力润滑（EHL）中的厚板接触中心的膜厚度。 结果表明，该薄膜厚度方程具有令人满意的预测精度，用于无量纲负载，薄膜厚度比为0.01至200，特别是当负载重沉重时。 在重载条件下，它具有比Grubin公式和Dowson-Higginson公式更高的预测精度，这两者都要高估了中央EHL膜厚度，即使在1到2个订单的幅度下也是如此。 在研究范围的参数值W / H_C的宽范围内，将当前膜厚度方程的最大预测误差检测为约40％。 它给出了本发明的膜厚度方程达到了重载的应用值，这是通过先前的EHL膜厚度配方容纳的重负载。

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