平均流れ理論に基づく円筒ジャーナル軸受の動特性解析

概要

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As a preliminary study on elastic cylindrical journal bearing, this paper presents an analytical method and the calculated results of the static and dynamic characteristics of a rigid cylindrical journal bearing, based on an average flow model theory. By using a modified law of the equivalent lubricant density and viscosity in the negative pressure region, reasonable static pressure distributions with small negative pressure or zero pressure can be obtained. Dynamic pressure distributions, produced by journal velocity, are consistent with those in infinitely long journal bearing theory, proposed by the author in the previous paper. Elastic and damping coefficients are qualitatively equal to the prevailing numerical results. It is also found that the unstable threshold speed and whirl frequency of a rigid rotor and bearing system are in good agreement with those in infinitely long journal bearing theory, described above.
一般社団法人日本機械学会の論文
1985-11-25