An Investigation on the Dynamics of High-Speed Systems Using Nonlinear Analytical Floating Ring Bearing Models

Figure 9

System #1: orbits of the journal at bearing #1 (a, b, c, d) and bearing #2 (e, f, g, h) for the different cases of simulation at (a) and (e):  kRPM; (b) and (f):  kRPM; (c) and (g):  kRPM; and (d) and (h)  kRPM. Solid line: exact analytical solution (Case #1), dashed line: approximate analytical solution (Case #2), dash-dotted line: short bearing approximation (Case #3), and dotted line: numerical solution (FDM) (Case #4). See also Table 3 for the definition of the cases.

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)