The Effect of Plate Stress Distribution in Post Buckling Field on Shear Force and Plate Interaction Force in Steel Plate Shear Walls

Steel plate Shear walls are resistible systems against horizontal loading. They are used without stiffeners and with stiffeners types. It is necessary that the plate stress distribution is studied for determining the shear force and yield displacement of plate and the plate stress interaction effects on frame. In this paper، the plate stress distribution is studied by using two experimental steel plate shear walls without stiffeners and with stiffeners. The results show that، the plate third principal stress in post buckling field should be equal the plate shear stress buckling for determining the shear and yield displacement of plate and should be equal the half of plate shear stress buckling for determining the plate stress interaction effects on frame.