Post Buckling Behavior of Prismatic Structural Steel Members with Semi Rigid Connections | ||
| Engineering and Technology Journal | ||
| Article 1, Volume 34, 6A, June 2016, Pages 1116-1130 PDF (556.65 K) | ||
| DOI: 10.30684/etj.2016.113132 | ||
| Authors | ||
| Amer M. Ibrahim; Murtada A. Ismael | ||
| Abstract | ||
| In most designs of steel frames,beam-column connections are assumed either perfectly pinned or fully rigid. This assumption results in an incorrect estimation of the structural behavior of these frames. Practically, beam-column connections are between these two extreme assumptions and possess some rotational stiffness; therefore, it is called semi rigid connection. This research, presents a numerical analysis using finite element method to study the effect of semi-rigid connection on post buckling behavior of prismatic structural steel frames. The beam-column connection is modeled by linear elastic rotational spring element with specified rotational stiffness. The obtained results reveal that changing beam-column connection from rigid to semi rigid with different rotational joint stiffness values make the load-displacement curve of post buckling behavior less stiffer, the ultimate load decrease and ultimate vertical displacements increase with percentages depend on joint stiffness value and type of frame ;thus, semi-rigid connection should be considered in analysis and design of steel frames which exhibits post buckling behavior to obtain more realistic results. | ||
| Keywords | ||
| Post Buckling Behavior; Structural Steel Members and Semi; rigid Connections | ||
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