Numerical and Experimental Analysis of a Shear-Link Energy Dissipator for Seismic Protection of Buildings

Abstract eng:
This paper presents the numerical analysis and the experimental results of an energy dissipator based on metal yielding for seismic protection of buildings. The study is oriented to propose a Shear-Link device that exhibits yielding when experiencing small displacements and to evaluate its experimental behavior. It is presented the numerical model of the proposed device and their force-displacement relation-ship, as well as the results of the device hysteretic characterization test when applying monotonic growing load. The corresponding force-displacement relation-ship is obtained to validate the numerical model. The experimental model was manufactured whit conventional structural steel. Its shape in wide-flange section allows an optimum energy dissipation in the whole section besides being very stable provided web buckling is avoided. Its behavior therefore is similar to that of eccentric bracing. The results were generalized in 32 different units whit yielding force between 13.65 kN and 435.5 kN. All these units had yielding displace around 0.25 mm.

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