Stress numerical analysis of cold-formed steel angles

Resumo

This work is a stress numerical study of cold-formed tensile-loaded steel angles with bolt-connections.
Due to the bolted connection, the angle does not deform evenly, resulting in a phenomenon known as shear lag,
which reduces the resistant capacity of the angle under tension. This phenomenon is also investigated in this
work. For the calculation of the piece final capacity, the hypothesis of rupture of the net section is examined and
the phenomenon of shear lag considered through the Ct factor. In order to verify the behavior of cold-formed
angles with bolted connections subjected to traction, several angles were modeled using the ABAQUS
commercial finite element analysis package, considering geometric and material non-linearity. The results
obtained in the numerical analysis were compared with results of experimental tests, reaching a good agreement
between them. However, it was verified the feasibility of numerical modeling in the support and
complementation of experimental research involving thin sheet profiles.