ティルティングパッドジャーナル軸受で支持された回転軸のオイルホイップに関する研究

第1報, 実験と理論計算の比較

抄録

This paper studies the oil whip of an elastic rotor supported in tilting-pad journal bearings experimentally and theoretically. Oil whip was found to occur in a test rig with the non-pivotable bearing seat which produces the angular oil film coefficients, while the rotor remained stable up to the maximum shaft speed of the test rig with the pivotable bearing seat. The theoretical analyses find that oil whip of tilting pad journal bearings is caused by different mechanisms, depending on pad preload factor and bearing seat type. Predictions agree well with the observed behavior of stability threshold shaft speeds qualitatively, although the quantitative agreement needs to be improved.