Elastoplastic and Large Deflection Analysis of Steel Frames by One Element per Member. I: One Hinge along Member

Abstract

The ultimate load of a typical steel frame is dependent on the geometrically nonlinear and material yielding effects. The complexity for considering material yielding by the plastic hinge approach is the unknown location of the plastic hinge, which can occur at the ends or any position along the element length. For the latter case, a member is divided into many elements in order to approximate the location of a plastic hinge. This process is tedious, inconvenient to use, and involves extensive computer time. Further, the strength check for sectional capacity using the