Research Article

Effects of the Hot Alignment of a Power Unit on Oil-Whip Instability Phenomena

Table 2

Dimensionless stiffness coefficients of the oil-film journal bearing no. 1, evaluated at 3000 rpm, included in the models no. 1, no. 2, and no. 3 (y: vertical direction, x: horizontal direction).

Journal bearing no. 1
Dimensionless stiffness coefficients
Model no.

118.2270 10.0358 1.723753.1715
214.2846 8.6062 0.97483.2153
32.7263 2.73660.01581.3885