Experimental study of seismic response of structures with semi-active damping central systems

The experimental testing of two different semi-active fluid damping devices is described in this paper along with shaking table tests which have been performed on a one-story model structure both with and without the semi-active damping system The semi-active dampers operate on the principle of fluid orificing and have mechanical properties which are controllable through modulation of fluid flow within the device, The control forces acting on the structural system are developed as a result of the motion of the structure through appropriate adjustment of the mechanical properties of the semi-active dampers.