面粗さをもつ圧縮性潤滑膜におけるすきまの平均化法

概要

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Compressibility effects of rough lubricating films on film thickness averaging are studied numerically in order to grasp the applicability of average film thickness theory to compressible lubricating films. The effects are found to be segregated in four regions depending on the amount of two bearing numbers:Λ, defined using bearing length; and Λ^*, defined using roughness wavelength. In regions I and II, Where the Λ^* value is sufficiently small, the same averaging method as that for incompressible films is applicable, no matter how large the Λ value is. In region IV, where compressibility effects with respect to Λ^* are almost saturated, Greengard's averaging method can be applied. In the intermediate region (region III), any averaging method using only roughness amplitude distribution is ineffective. It should be noted that averaged film thickness can be determined physically in regions I and II, while it is defined mathematically in region IV.
一般社団法人日本機械学会の論文
1989-11-25