Análise numérica da inserção de enrijecedores de alma em terças de aço formado a frio

Abstract

Cold-formed steel profiles constitute an efficient and versatile structural solution in civil engineering, standing out for their high strength-to-weight ratio, dimensional precision, and wide applicability in modern construction systems. This study addresses the analysis of the structural behavior of cold-formed steel profiles, with emphasis on the influence of web stiffeners and slenderness variation on the structural performance of these elements. The research was developed through numerical modeling using the Finite Element Method, with the aid of Abaqus software, enabling the evaluation of the critical moment and the instability modes associated with the analyzed profiles. The results indicate that the use of stiffeners can significantly contribute to increasing the load-bearing capacity of the profiles, especially in situations where local buckling predominates. However, it was observed that, in certain cases, the insertion of these elements does not result in structural gains, particularly when the behavior is governed by global instabilities. Thus, the study highlights the importance of a careful analysis of geometric and mechanical parameters in the design of cold-formed steel profiles, contributing to the development of more efficient, safe, and economically viable solutions in structural engineering.