Comportamento estrutural de vigas casteladas em aço inoxidável.

Abstract

Castellated beams are ordinary used in various types of structures for covering wants to win large spans. In addition, A novel situation has been considered using stainless steel beans. The present dissertation presents a comparative analysis between castellated beams and a solid-section beams, based on the Eurocode and the Continuous Strenght Method; and through a finite element model developed in Ansys program. The main aim of this work was to investigate flexural capacity of castellated stainless steel. Physical and geometrical nonlinearities were incorporated into the models, in order to fully mobilize the load-carrying capacity of the structure. The material nonlinearity was considered adopting the Von Mises yield criteria with a material constitutive law with a multilinear stress versus strain curve associated to a elastic-plastic behavior with hardening. The geometric nonlinearity has been introduced by the update Lagrangian Method. The numerical results of the study beams were evaluated in terms of failure modes and stress distribution analytical. The results were compared to the numerical model results and shows a satisfactory safety values.