Hysteretical Behavior of Steel Slit Dampers Subject to Geometric Changes

Resumo

In the last decades several alternatives to obtain buildings that present a more efficient behavior to
seismic events have been developed, one of these alternatives is the implementation of passive energy dissipation
systems that modify the dynamic characteristics of the structure thus controlling its deformation and subsequent
damage. Particularly, steel slit dampers are an inexpensive alternative and they have proved reliable and easy to
install and maintain. This paper evaluates the hysteretic behavior of metallic dampers subject to cyclic load. The
amount of energy that a steel slit damper can absorb is determined numerically by means of a finite element model
and a comparative analysis of sensitivity to changes in shape and distribution of holes, thickness and width-height
ratio of the plate is presented.