環状給油溝を有するスクィーズフィルムダンパの動特性の研究 : 第2報, 理論解析

概要

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After the investigation of the experimental results in the 1st report, an analytical theory based on a linearized Navier-Stokes equation is developed for the estimation of the dynamic characteristics of an annular center-grooved squeeze-film damper. In this theory, the center groove is treated as a damper with large clearance, and analytical solutions of land part and groove one are connected at their boundaries. This analysis illustrates that the pressure at the groove part is not negligible ; it arises in a 90-degree phase-shifted direction against journal whirl velocity, and causes a large inertia force even at small damper Re number. The results of the analysis show good agreement with the measured values in the 1st report
社団法人日本機械学会の論文
1996-08-25