Parametric Study of Behaviour of Perforated Yielding Shear Panel Device as a Vertical Link Beam in Inverted V-Braced Steel Frames under Cyclic Load

In this research, the cyclic behaviour of a perforated yielding shear panel device in an inverted v- braced steel frame has been studied. In 40 samples the effects of web thickness, amount of cut-out and amount of cut sector, in two samples the web length, in seven samples the variation of frames components and boundary conditions, and in two samples the centre to centre distance of the cut-outs have been studied. Non-linear analysis has been performed using the finite element ABAQUS code. Cyclic displacement control loading based on FEMA 461 protocol has been applied to the two sides of the beam. The von Mises yield criterion has been used. Obtained results show that if the web thickness of the yielding shear panel exceeds a certain value, the panel will not yield. Making cut-outs in the web and cutting sectors at the two sides of the web up to a certain amount increases the dissipation of energy, and thereafter it has an opposite effect. The amount of cut-outs for which the maximum damping occurs increases with the increase of the web thickness. Therefore, the favourable amount of cut-outs increases approximately proportional to increase of the web thickness. For instance, the favourable percentage of cut-outs without cut sectors with a web thicknesses of 10 mm, 15 mm and 30 mm are approximately 10%, 20% and 30%, respectively. These values for samples with cut sectors of 20% are respectively 10%, 10% and 30%. A yielding shear panel with a shorter web length absorbs more energy. Increasing the beam moment of inertia and the bracing cross-sectional area does not have a significant impact on increasing the damping.