乱流ジャーナルすべり軸受の動的挙動 : 第3報,サブマージされた軸受の安定性解析

概要

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In this third report, the effects of cavitation patterns on the static and dynamic characteristics of submerged turbulent journal bearings are investigated theoretically. Considering break-up and fill-back boundaries in the diverging film region, we obtain analytical expressions for dynamic film pressure and cavitation pattern, and calculate the load-carrying capacity and attitude angle for a wide range of eccentricity ratios. Then, assuming a small displacement of the journal center, we obtain dynamic characteristics such as linearized spring and damping coefficients, the whirl onset speed of rotor-bearing systems, and the transient motion of the journal center. Numerical results are indicated in graphic form for a wide range of Sommerfeld numbers, and the relation between the cavitation pattern and the stability of turbulent journal bearings is discussed.
一般社団法人日本機械学会の論文
1989-09-25