Cold-Formed Steel sections are commonly used in residential and commercial buildings as purlins, side girts, portal frames moment resisting frames. The bolted connections can be connect the different structural components of these together. These allowing transfer internal forces structures such axial forces, shear bending moments torsion. main objective this paper is to study numerically behav...

The present paper proposes the use of stepped cross section devices on steel frames aiming at reproducing a pre-established target push-over curve. To this aim Limited Resistance Plastic Device (LRPD) to be inserted along selected structural members is proposed. following two main specific features for LRPD are required: any elastic flexural stiffness variation original member must avoided; an ...