Frequency response of second-order systems with combined coulomb and viscous damping

Abstract

Curves obtained with an analog computer are presented for the magnification factor versus frequency ratio of second-order systems with combined coulomb and viscous damping. The ranges of the parameters are as follows: Viscous damping ratio from 0.05 to 5.0, in 15 steps; coulomb damping ratio from 0 to 0.9, in 11 steps; and frequency ratio from 0 to 2.0. Boundaries between regions with 0, 1, and 2 stops per half-cycle are also shown.