The AISC, American Institute for Steel Construction, provides procedures for the verification of computer based structural analysis programs. These are contained in AISC 360-10/16/22 Chapter C and include benchmark problem descriptions under Figures C-C2.2 and C-C2.3. In both cases, the iterative non-linear finite element analysis (FEA) program considers axial, flexural, and shear deformations.
C-C2.2, case 1, covers a simply supported beam-column subject to an axial point load concurrently with a uniform load. This case contains only P-delta’ effects (gravity loads action on member deflections) because there is no translation of one end of the beam relative to the other.
C-C2.3, case 2, is a fixed base cantilevered beam-column subject to an axial load concurrent with a lateral load at the top. This case contains both P-delta’ and P-delta effects. P-delta effects include gravity loads acting on lateral displacements.
Confirmation of an iterative non-linear analysis procedure includes verification of both moments and deflections. Deflections are presented here based on Autodesk Mechanical Event Simulation software (MES) that considered isometric steel properties in a non-linear formulation. Moments were also verified, confirming MES compliance with AISC code provisions.
Case 1: C-C2.2
Case 2: C-C2.3
