Vibration Control by Dry Friction Damper

Abstract

This work is concerned with the study and use of dry friction dampers for : :vibration control. First, the characteristics of the friction damper are 'determined. Then, the friction damper is applied to a hinged-hinged bean, The amplitude-frequency response for a harmonic excitation is determined both theoretically and experimentally. For linearization of the equations. bf motion, the friction force is replaced by an equivalent linear viscous : force dissipating the same energy per cycle. The results obtained from experiments and theory are in good agreement, and it is shown that, by a suitable choice of the ratio of the friction force to applied force' the * friction damper can be an effective damping device.