ヘリングボーン溝付動圧気体ジャーナル軸受の動特性解析 : 無限溝数と有限溝数の解析

概要

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A dynamics study of herringbone-grooved gas journal bearings is presented placing emphasis on a comparison between infinite and finite groove number solutions. The study is conducted under practical operating conditions by means of a nonlinear orbit approach. The analysis scope includes a grooved member rotating system as well as that with a smooth member rotating. Numerical examples show that the infinite groove number assumption predicts the self-excited half-frequency whirl stability with tolerable accuracy unless the rotor is fully grooved. Also, it is found that the assumption gives a fair approximation to the synchronous orbit amplitude evaluated by the exact finite groove number analysis. However, it should be noticed that the infinite groove number theory tends to overestimate both the stability performance and the synchronous vibration stiffness.
一般社団法人日本機械学会の論文
2001-06-25