Analytical Modelling of Built-up Steel Beams Using ANSYS

A Finite Element (FEM) model has been developed using Ansys 15 to analyse the built-up steel beams. The aim of this research work is to study the behavior of the built-up steel beams. When built-up sections have smaller depths, they may behave like a beam element and the bending moment may be predominant. When the depth becomes large, the built-up section may behave like a truss where in the bending moment will be negligible. At moderate depths, both bending moment and axial force may be predominant in the member. A parametric study has been performed for a number of beams with different geometry sections. Commercial finite element computer program ANSYS is used to perform linear as well as non-linear analysis for different models. The results of the ANSYS model were validated with result of the STAAD. Prosoftware. The forces, bending moment and deflections are computed and the behaviors of the built-up sections were analyzed. The details are presented in the paper.