FRACTIONAL-FREQUENCY ROTOR MOTION DUE TO NONSYMMETRIC CLEARANCE EFFECTS. Academic Article

abstract

• Analysis based on the Jeffcott model demonstrates 1/2 speed subharmonic motion can be explained as either a linear parametric-excitation phenomenon or as a stable nonlinear subharmonic motion. The 1/3 speed motion is possibly due to radial stiffness nonlinearity. During a normal-tight rubbing condition, Coulomb damping widens the potential range of unstable speeds.

authors

• Childs, Dara

published proceedings

• American Society of Mechanical Engineers (Paper)

author list (cited authors)

• Childs, D. W.

complete list of authors

• Childs, DW

publication date

• January 1981

published in

• American Society of Mechanical Engineers (Paper)  Journal

issue

• 81 -GT-145