Discussion: "Stability and Transient Motion of a Vertical Three-Lobe Bearing System" (Falkenhagen, G. L., Gunter, E. J., and Schuller, F. T., 1972, ASME J. Eng. Ind., 94, pp. 665–676)

W. Shapiro
1972 Journal of Engineering for Industry  
assuming that 4(7f 2 -B) > A 1 , then the auxiliary equation has complex roots and the general solution to equation (59) is
doi:10.1115/1.3428226 fatcat:glrlcvlk4bbvnlnhjwyfana4hm