表面粗さを考慮した乱流潤滑理論 : 第3報, ジャーナル軸受の動特性解析への適用

概要

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In this third paper, an application of the generalized turbulent lubrication theory considering the surface roughness effects to dynamic performance characteristic analysis of journal bearings with homogeneous rough surface is presented. Based on the linearized analysis, the numerical results of spring and damping coefficients and whirl onset velocity for the Reynolds number of Re=2000, 5000 and 10000 are obtained for various values of relative roughness. Moreover, based on the nonlinearized analysis, the transient motion of the journal center is calculated for both cases with and without surface roughness. In order to confirm an applicability of the generalized turbulent lubrication theory to dynamic performance characteristic analysis, the whirl onset velocity and the transient motion of the journal center are examined experimentally for two types of bearings with different relative roughness. The experimental results of whirl onset velocity agree well with the theoretical results.
一般社団法人日本機械学会の論文
1990-04-25